The Mustang is a straightline bullet but the Vette and the Viper will tear it up around a road course just like the Camaro 1LE did in the LL. If I had 60k to spend I'd save a bit more and buy a Nissan GT-R.
'12 Focus Red Candy SE Sport 5 spd
'99 Toyota 4Runner Sport
'11 Subaru WRX STI Hatch