Z4 M, let me tell you why. 911 is a GREAT car, but sersiously if yoru gonna get a 911 you might as well go balls to the walls and get a turbo and be fast as hell
a viper is an american car, kinda cheap if you ask me(in terms of quality) its like a turbocharged mustang.. meh
no e39 m5 b/c you already have something so similar
Z4 M looks sick, enough said?