I broke my pickup and had to use the Pig for wheeling yesterday, love that big ugly thing.
It's a 1969, early, like yours. Before you pull that fresh air vent knob, clean out the junk. It goes to the vent infront of the windshield. Those are a cool thing other pigs didn't get. The throttle control is something I've never seen hooked up, but is still intact on my pig.
I have the dash 4WD and hi-lo lever and I love them. It always goes into and out of 4wd and low without any hassle. When I first got it, the vacuum diaphram in the transfer case was bad. It was cheap, available from toyota, and easy to change. The vacuum actuators seem to last forever. I really prefer the dash set up. A plus is that modifying it for 2WD low is simple, there is just a pin to remove under the dash, that's it. No tools needed.
The rubber is crazy priced in my opinion also, but that's how it works. I really give props to those who stepped up to reproduce them (like PVCruisers). Too bad they ain't cheap to make. FJ55-100 used a windshield rubber gasket for the cargo windows by cutting it to size and glueing it back together. It looked very nice and was cheap. With the profile of the window frame, universal rubber seems like an awesome idea.
My pig also has a toyota power steering conversion. I run a supra pump on the passenger side. (currently kind of rigged, need to change the harmonic balancer on the new motor I installed. The old F145s came with a 2 groove pulley). I have 33" TSLs on it and it turns super easy, 1 finger steering on the road. At low RPMs on the rocks, there is much to be desired but still way easier. The FJ60 setup is way pimp compared to the stock setup, but the stock still works great. If you never need to get too crazy in the rocks the stock toyota setup is great. The pump arrangement is bad though. I have a weber, but am hard headed and refuse to use the tiny airfilters and have a stock one instead. With a stock air filter and PS, something has to go.