I am considering putting a 59 chevy truck body on a 80-85 Chevy C-10 truck frame. I would like some more info about thhis swap. Thanks!

I believe the track width of the 73-87 c10s is too wide.
Shane

It's been done alot in a 4x4 conversion but haven't seen it done in a 2 wheel drive setup. Like Shane said might be to wide, grab a tape measure and go check it out.
Gene

A full size trck frame WILL have too wide a track for the '59. I guess I'd ask why you want to do this? Huge amount of work fabricating body mounts, wheelbase difference, etc. Some gus are using S10's, but you face the same issues.

It's be much easier from a build standpoint yo use the original frame, swap rear ends to whatever you want and use either a dropped axle and disk brake kit or subframe the truck.

Brian