I recently picked up a 68 FJ40 and with it came 2: 3-speed trans with vacuum transfer cases, a 4 speed newre TLC trans mated to the 4 speed t-case, I have a 350 and a TH350 available relatively cheap. My question is: Which set up is the best for a guy who wants to cruise the highway at 75 and still put-put around off-road. No crawling or anything serious off road. I'm sure I could find a sm420 or 465 easily. I have read that automatics are tougher to install. Which transfer case is more desirable to match up to a gm trans 3spd or 4spd? Which set up will be the cheapest and most reliable? I appreciate any opinions and help.