I'm not sure the classical and the modern lines mach in this drawing, but anyways... It's a Buick Wildcat, based on the 1967 model.
Model: Buick Wildcat
Body styles: 2-door hardtop, 2-door convertible
Engines: LLT V6 (base), LS3 V8 (GS),
Transmission: 6-speed automatic (base), 6-speed manual (GS)
Platform: GM Beta platform, successor of the GM B platform (1959-1996)
As always COMMENTS ARE WELCOME!