Oooohh,what a question...
I've had a 1968 Z-28;animal of a car with the 11:1 cr,optional cam and an M-22 and 4.11 gears and an appetite for HIGH-octane fuel. But that wouldn't be it.
Being in the Home of Buick,I've driven and ridden in some hometown beasts,but they wouldn't be it. Close,but not quite.
So-o-o-o...A few years ago,at a small show near Frankenmuth,a guy rolls in with a 1967 Mercury Comet Capri. For those who aren't aware,the Capri was the mid-level model in the Comet line,a 2-door hardtop. This car was stunning in red paint and red interior. However...I heard it before I saw it-a 427 propelled this beauty. RARE car;one of 7 built in this model(6 "R" code cars,1 "W" code car,his was an "R"),and ALL original. A true survivor,with full documentation and Marti Report. I have not seen this car since that night,and that was back in 1996. I have a couple of pics on my garage wall;I'll get them out here tomorrow.
So,right now,gun to my head,I'd say a '66-7 Merc or Ford Fairlane-with a 427,of course.
Did I mention that I love 1970 GTO's as well? No? Lemme tell you 'bout...