assuming street car.....
AC Cobra 427 SC. one of the quickest and fastest regular production cars ever sold in the us.
69 Chevy Camaro RS Z28 302 4 speed. i don't know it's performance potential, but i had a customer that had one with 42k original miles(documented). if i had driven one of these when i was a teen, i'd be a chevy nut rather than a ford nut. smoothest shifting manual trans i ever felt. engine still pulling hard at 7,000rpm in 3rd gear......
08 mustang gt. cheaper than a vette, and close enough in performance that a few minor mods will help her eat the vettes for lunch
