any difference between '72 Blazer and Pickup frames?

[centexan]

Hi folks, I've been reading these threads for a few days and by luck I stumbled across a 1972 4wd complete rolling frame for a steal near my home. It is from a Blazer but I was wondering if a '72 truck body would work in it also. I didn't know if there was much difference in the two frames concerning body mounts etc. Also, it's extremely hard to find a 4wd '72 truck or blazer around here so if I found a 2wd and mounted the body of either on the 4wd frame, does that affect how the vehicle is titled? The vin number would still say its 2wd right? Sorry for so many questions, but these years of chevy are the best looking by far and I have always wanted one. Here is my chance, but I just want to know what I'm getting into. Thanks for your time.