The place that I found that has them states the following

Here we sell the front cab mounts that are riveted to the frame of the truck for 1965-72 F-100/250/350 Trucks 2 wheel drive.


Are these mounts any different for a 4x4 truck? I wouldn't think that they would be since the cabs of 67-72 are interchangeable.

Other than the Flashbackf100 site, where else can I find the frame rail cab mounts?

 

4x2 and 4X4 were the same front brackets. Originally 67-69 Bumps took C5TZ5077B AND C5TZ5078B. But those were replaced by 70-72 Bump part numbers D1TZ5077A and D1TZ5078A.