smashing a 1985 and a 1979 K5 together

1979 K5 = rot box, but the frame is actually quite nice and a good deal of it has been covered with marine paint. 1985 K5 = rot box, but not completely gone like the '79. But the frame isn't *that* great, although better than my 1990 GMC V1500 Jimmy.

I was thinking of putting the 1985 K5 body onto the 1979 K5 frame, to make a nice bare-bones beater. Something I can drive into snow banks and crap like that, just beat the piss out of, and not feel bad about scratching it. I used to do this with the 85, but the 79 has a 350, 85 has a 305. Some lift, etc. Basically I would like to strip down the '79 so it takes up minimal room - same with the '85 - but I don't want either to completely die. Call me weird.....

So basically the question is this; with a "quite decently rotted" tub, could one expect to be physically able to pull it and put it back on another frame, or do they usually self-destruct?

GMC Gremlin