Difference between GMC and Chevy cabs?

[desert-rat]

Few questions regarding '67-'72 cabs. I'm in need of a cab. Mine is a '69 GMC 3/4 ton. I think I'm over my head in rust.

Any difference between years, weight (1/2 ton, 3/4 ton), LWB or SWB, GMC or Chevrolet?? Can I just swap GMC for a Chevrolet cab?? Thanks.

It's gonna cost me more to do rust work than to buy a better, less rusted cab than mine. The shop started rust repair and it's one thing after another.

[randy500]

GMC and chev cabs are the same.
67 cabs have a different dash, flatter at ignition switch.
67-8 cabs the wiring harness mounts horizontal and the e brake is underneath the column with a grab handle.
69-71 cabs I think are all the same with a raised pad on the inner roof for the rear view mirror.
72 cab has no raised roof pad for the mirror.

[GMCPaul]

There's 1 other minor difference that affects accelerator pedal.
69-70 cabs use a floor mounted accelerator pedal, 71-72 cabs use a firewall mounted accelerator pedal.
Paul Sr @ GMCPauls