I think you're a little mistaken Junebug. When the Vette's went from CFI in '82 to TPI in '84, it was day and night difference in what they would do. And back in those days to think the Vette's and IROC-Z's both with TPI wouldn't haul ass is ludicrous at best. There wasn't a domestic production made vehicle out there, Mustangs nor Grand Nationals, that could touch the Vette. The only Grand National that would get a Vette's ass was the last year production '87 GNX (3.8L turbocharged V6).
You were prob busy with crayons and coloring books in elementary school when that was going on.