Your rear sway bar install is very good per PST instructions. However, be aware that the little u-bolt in the frame rails is a weak point in the design. About thirty years ago, I saw one of those u-bolts pulled right through the frame rail metal on a 1975 Chevy Nova (a southern California car and not rusted). The car did not crash but I wonder what kind of forces were at work on a road curve to do that. A better way to fasten to the frame rail would be like Chrysler did on say Cordobas or the 1976 Dart police package rear sway bar mount. I encourage you to check into the details of how it was done. My first experience with the addco design u-bolt in the frame rail was in 1971 when I bought a rear sway bar package for a 1970 Road Runner, took it home, read the instructions and compared with the parts package, then quickly took the whole thing back to the store and got a refund.
