Haven't updated in a while...
So my vibration/noise/harmonic did not go away when I put the CVs in. They were leaking pretty badly so would have needed replacement anyway. So I'll just cross them off the list as preventative. I am leaning more towards the front drive shaft or a front pinion bearing. I am really hoping it's not the pinion bearing because that basically means a whole front diff rebuild...

Anyway, I may pull the front D/S and send it out for u-joints and balance. Not sure yet. If it does end up being the front diff it becomes a question of, do you re-gear, add lockers, etc? ... The rabbit hole goes as deep as your wallet will allow...
The other issue I am having is the suspension. I added the spacer kit and we broke the lines loose on the XREAS. Obviously, you're not supposed to do that. So now the shocks are acting like they're blown. Large bumps or whoops and they act fine but on washboard type stuff or small bumps they are terrible and rattly. So, I just ordered the Ironman kit from ACC Toyota. I wanted the Foam Cell shocks (had them on my Tundra and they were awesome) but they were out of stock. So I went with the Nitro shocks. I have heard good things about them as well. So, I'm not really too upset about spending the money to get the Ironman stuff. I am a little upset that I should have just done that to start with. I guess the moral of the story is, if you're gonna wheel, just go ahead and but the good stuff up front. Spacers and wheeling just don't go together. Also I like the XREAS for on-road driving but I don't feel like it does anything for you off-road. Plus it's super expensive to replace anything and like the height control seems to be fairly problematic. Anyway, lesson learned!!!
The other thing I started messing with the other day was the lights from the running boards. I don't plan to ever put them back on so I started dismantling them to get the lights out. I plan to mount them up under the truck and use them like rock lights. They already plug right into the factory harness. So I am just going to tap in and put them on a toggle switch instead of coming on with the unlock/door open operation. I'm also probably going to get some really bright LEDs to put in there. They are not very bright right currently. Just has a "peanut" bulb (192 or 194).
I'll update again when the Ironman stuff comes in.
Edit: Some of the vibration like at highway speeds I have determined is the shocks. Gets kinda bouncy sometimes.