@ ebodyseast, This stuff came in a bulk parts purchase I made a long time ago. Every belt in the box is E body, only one of these. The guy I got it from was a wholesale parts guy for Chrysler, and had a slug of E bodies, no brand X ever as far as I know. I did get some other E vert stuff from him (now gone). The only other used stuff I got from him that was not E was 71 Charger. I am pretty sure M46rat knows the guy I got it from, and would probably agree that he would not have had it if it was not mopar.

I do not know what the provision for a bracket would be, it does have an adjustment slider. My 70 service manual is out on loan, so I cannot look at that even.