New in town/Frame help

[SUPERTRUCKER!!!]

I just started and I am new to the forum deal. This site looks like it has alot of really good info. I have a 72 1/2 ton 4x4 that is pretty much just a cab
now. I got newer 3/4 ton axles and a 454 with 2 wheel drive th400 and a divorce mount np205 transfer case. The frame was trashed when I got it and has long since been scrapped. I recently got a 72 3/4 ton suburban frame that is in really good shape. I read the thread on shortening a LWB to a SWB and am planning on doing it. The rear cab mounts are different on the sub frame and I don't have the pickup ones. I was looking for measurements for the truck rear cab mount brackets and maybe pics so I could build my own. I also need measurements from the center cab mounts back to where I need to drill holes to mount the rear cab brackets. Thanks for any help.