64-66 P/U/Suburban frame differences?

[monolith]

Hi all, I was wondering what the differences are (if any) between pickup and suburban frames. will a sub body fit on a p/u frame or vice versa?

I picked up a spare decent suburban body to swap out with the rotting one currently on my 64 4x4 and I figured I could work on refurbishing the rusty one in my spare time- problem is- the frame it came on has some issues: bent radiator support(as in pulled in from dragging the truck- it's got about 6" of deflection in it) no motor, trans or radiator- rear diff is empty, front spindles have no brakes, just rotors and wheels. 5 lug.

I have a running 64 GMC long/wide /305/ 6 lug that I was going to use as a cab front/vin/parts donor if it would work out.

My most burning questions are: Would it be easier or more desireable to take the back"half" of the suburban body and mate it to the cab of the 64 p/u and run it on the pickups frame? Or cut the cab and driveline parts that I need off of the pickup, fix the suburbans frame issues and graft the pickup cab section onto the sub?

And would using the pickups VIN be problematic in either case?

Both are leaf sprung trucks.

I'm ok with stripping either truck to swap components..

I realize that this is a hugely ambitious process, but I've been honing my chops on my 66 DD and am anxious to challenge myself.

As usual, any warnings, advice, etc. is greatly appreciated.

Thanks in advance,

Baz