I think,.. I once heard, that cars made with a Rear Spoiler, had a thicker or Heavier Torsion Bar to lift the Trunk Lid. Is this true..??? and Are Convertible versions, any Different than Hardtop versions..??? I have a Convertible, That I want to have a Heavy, NOS Rear Spoiler Installed onto it. I bought mine at a Buick Dealership in 1983.
The 70 GSX's had a heavier bar. Don't know about the 71/2 cars that came with a spoiler. Those bars are like hens teeth.
