Cars and Concepts made the T-Tops for the GM Camaro/Firebird, Fiero and Ford Mustang in the 1980s.
Previous to that 1976 to 1981 GM made their own T-tops and Hurst Made the "Hurst Hatch" which was featured on Smokey and the Bandit. Neither was involved with Cars and Concepts.
Maybe Roger Garrison can chime in here. (Hes a Auto Body Pro)
There was another aftermarket refit kit in the late 70s that may have been C and C but I havent seen many of these. On this model of kit, the T roofs actually look like later model t top roofs.
[This message has been edited by htexans1 (edited 05-03-2010).]