[padresag]

Originally Posted by 66-PMD-GMC

Actually, the first set posted are for a 4X4 suburban. The frame shape and cab mount brackets are wrong for 1/2 and 3/4 ton GMC trucks 63-66.
The second post had the right cab mount locations but it is a coil rear and no dimensions forward of the front wheel centerline.
Those are the critical dimensions, both side and top view, that I need.
I have several trucks now and 1 apart so I can get dimensions now.
I am generating a plan on auto-cad and it will include all dimensions for 1/2 and 3/4 ton GMC trucks and also short and long wheel base.
I am also generating a plan to convert a 67-72 frame to use under a 63-66 GM. Same goes for that plan, both long and short wheel base applications.

it is for a 60-62 4 x 4
ron