Modern ford mustangs have a bolt in aftermarket bar for mounting the shoulder belts. We could sure use a product like that because the orig seat belts are not intended for going fast and not everyone needs a roll cage.

I have built in an E and B body with shoulder belt mounts on the top of the package tray. It's the reinforcement that you don't see overbuilt into the top of the package tray. In the B body I made the shoulder belts removable so if the back seat was needed it could be used. This is not intended to pass any NHRA rules, just to be safer running laps. I hope you all can relate to that.

Real seats are required as well, not the seat depicted in the orig post.

The black seat belt is a 3 pt aftermarket manual adjust style.