the front two body mounts will work possibly the second set as well the third set most likely won't. Are you putting it onto the frame of the truck in your avatar? because the 2nd gen extra cabs are much smaller so the front body mount to the rear i believe is a further distance on the 3rd gen frame, dont quote me on that though.
Yes it is the truck in my avatar. And I know for a fact that the rear cab mounts won't work like you said. I was hoping that the front 4 would line up, and I would only have to fab the 2 rear most mounts.
I'm 95% sure it will not just bolt on and go. You will probably have to lower it down on the frame and cut off the old mounts and make new ones. If your good at fabbing and sas'd your own truck then it shouldnt be that hard. I'd say its probably a weekend project. then wiring and all that stuff which shouldnt be that hard.
I didn't think about vertical alignment... Another thing that is stuck in my head is the mounting for the V-6 engine... The SA frame has a much larger arc at the front axle than the IFS frame. This is an obvious reason that this frame is more desirable for a crawler, but I think it may arc up too much for the mounting of the V-6 motor. However, I found a good frame yesterday, and I am determined to get my running gear and cab mounted to it! I don't like the 125" wheel base, and I have FUBARed the front of my frame!
PZ