I have 1.14 MP bars in my 68 Barracuda coupe with welded subframe connectors. 245/50/15 sidewall tires. Bilstein shocks

I've run .99" T-bars before that. 245/50/15 sidewall tires. And 225/60/15 before that. KYB shocks. Still softer and less harsh that 1.14" w/bilsteins

I also have a 68 Dart GT conv. So Cal car no frame or trunk rust whatsoever. No subframe connectors. It has .87" Tbars. KYBs. All rubber bushings. 245/60/15 sidewall tires.

I can certainly tell the difference in frame regidiity and cowl rattle/flex on the conv.


Tires sidewall is a big part of the harshness equation. What tire size are you running?

I would not run bigger than 1" in a convertible. I'd want to run subframe connectors too.. And I'd run rubber bushings. Paint tends to crack between trunk corner and convertible rear corner molding. Ebody verts seem even worse.

I would certainly not run 1.12" Tbars on a conv. Even with the subframe connectors. That's like putting stiff ends on a wet noodle.