C4s have both a transverse in the front and back. And yea you can make 500 hp outta 2.0, but you are gonna have some, at least minor driveablity issues from time to time. And you are never going to have the power in demand like the 7.0L LS7 motor will. Plus the motor isnt far from a making 600hp with just some tuning and bolt ons. And all the while still mainting high 20s mpg on the highway