So after a couple of weeks of driving the 60, wanted to post some observations from the experience. For the most part the advice I have gotten in this thread was spot on. Everyone here will know this stuff already, but from a purely Jeep to 60 switch standpoint, I wanted to post my thoughts in the hopes others thinking about the same thing will be better equipped to do so.
1. Its true what they say about slowness with these trucks. The thing I find is not so much the speed of the truck, but more the time it takes to do things in the truck. When driving it, every move needs to be planned for. Getting into the flow of traffic takes longer. Gotta wait longer for cars to clear before you get in as it just won't accelerate like a Jeep (never thought I would say that). You have to take more time to stop the truck although the brakes on mine are much better than I thought they would be. I liken it to driving a rented moving box truck. Its sort of familiar but just different enough as to have to pay close attention to what you are doing. Once you get into what you are doing, its really not unlike any other truck/Jeep you drive. I can keep up with and even pass traffic around me. It actually makes you focus on driving some. It take more time to turn. It turns wider and takes a little more effort.
2. The truck sort of floats along (at least this one does). Feels like an old Cadillac with a stiff suspension. After getting bucked around in a Jeep the last 9 years with its short wheelbase, this is a welcome but somewhat unexpected change. I had assumed the leaf springs would be pretty stiff on these. But the truck for the most part glides along. Not to the point of being soft, but just a nice mix of tough and tender.
3. The range on the 60 is about the same as the Jeep, even with the 60's 24 gallon tank. The PO said he had the gas guage worked on because it was not reading correctly. PO ran out of gas a few times so he suggested I keep a close eye on it. Last fill up was 15 gallons but that was with the guage at a quarter full. So I think the guage is accurate. I have not gone through a full tank yet for fear of running out of gas but early math seems to indicate the range on this will be slightly better than the Jeep. Of course depends on what type of driving you are doing.
4. You can see for miles in these all around. Its a little like riding in a fishbowl or something. I never realized how hard the Jeep was to see out of with the top up until I drove the 60. My 60 does not have tinted windows so its very bright in there. Pretty nice. The dash is very low so it feels as though you are up high looking down while driving it. The TJ dash is way up high and when you look out front you are looking over the dash. In my Jeep I cannot even see my hood unless I sit up some to look over the dash. There feels oddly like the Jeep has more room up front in it. You are sitting a little more up and over aside from the Jeep where you sit more leaned back and stretched out.
5. The overall vibe of the 60 is old. As much as I like it, it feels very old. Mine has this sort of a mixed smell of gas, exaust, gear oil, glue, and old carpet revealing all the many adventures this truck has most likely seen in its 170,000 mile journey to my driveway. The steering wheel is large and very thin and is plastic. Overall the whole truck is a definite throwback from another time. I find this both charming and oddly desperate. The interior is all business. Even the dash seems to be made of steel. Its absolutely solid though. Driving it feels so solid. None of the familiar creaks and squeaks my Jeep routinely echoed from the plastic the interior is finished in. The Jeep is obviously much more modern and finished inside and getting into the 60 I can't help but feel it is a step backwards, as if what I am doing here is a little bit of a mistake. This is more to do with my personal situation I think and not really any comment on the FJ60 itself. My 60's transmission is very tight and feels super solid. My 6-speed transmission in the Jeep is notorious for feeling notchy while sifting. Just does not feel very solid and never has. The 60's transmission feels smooth and super tight. Just feels very solid compared with the Jeep.
The overall theme here is that the two vehicles are different, but anyone thinking of such a switch to the FJ60 should know that it can easily be done. The FJ60 is really tough to drive but feels very solid. It feels much more like the cars of my youth than I thought it would. I had always imagined these as small tough utility vehicles. I am suprised at how much more 'American' this thing feels. Big, heavy. Closing the driver's side door echoes that familiar 'clunk' I remember as a kid. Even the sound of the engine reminds me of the cars I remember as a child. While the best option for owning one of these is have an everyday commuter car and drive the 60 as a secondary vehicle, anyone used to a Jeep should have no problem making the transition even with the 60 as a daily driver. I could see myself getting tired of the 60's slowness and the effort required to drive it over time, but it right now is a lot of fun. Even with my Jeep, I somtimes opt to take the wifes car instead of it for shear ease and my own laziness. I have yet to get this thing off road other than to test the 4WD works before purchasing it. I plan on taking this to Colorado this summer so hopefully I'll get some off road seat time then. Thanks again to all for the comments and support in figuring this out.