I checked on this today. My recollection was wrong.
There is a wood block about the center of the cab and on the frame rail held in place with a single bolt. That block is in addition to the one referenced earlier and held in place with 3 screws and captured nuts.
The rubber pads are 1/4” thick.
I tried posting photos of an exhibit I made years ago when my cab was removed from the frame for a total restoration. My iPad and the site software do not play well together for whatever reason. Instead, I will email you some photos that will show the wood block and dimensions and all the other hardware and installation sequence for the four attachment points on each side.
Send me a PM with your preferred email address.
Last edited by 46Sparky; 04/14/2018 12:26 AM.