Yet another GMC build

[6DoF]

Originally Posted by OKGMC4

I found my core support holes don’t line up by 3/4 to 1 inch

in width or distance from the body mount?

if distance from the body mount, you can probably find that much just by loosening everything and biasing the cab to the chassis, the fenders to the core support, core to frame, etc.

if width, can you just add a plate to the core support?