Re: what year frames work?
94 is a bastard year, it was really a 93 frame with a 2nd gen body. The 95 however was different, boxed all the way back. The 94 is only boxed in the front. Cross members and such also changed slightly over the years as well with a few different variations. Front sway bar connects changed on the lower control arms in 95 also. Nothing major that isn't easily fixed. I used a 93 Rancho suspension lift on my 94 and had zero problems with it working.
I have a stripped (no body or engine) 94 frame with full front suspension and front diff still in it, I've been trying to sell it, it is an extended cab truck though (surface rust only, came from the south).