Im a lot attendent at #1 cochran. Just the grand prix and bonnieville feel simular.But they dont make the bonnieville ne more. the new Grand Prix GXP barely feels ne thing like Grand Prix GT.and the GTO is a whole different car. Its a holden chassic and it weighs a hell of a lot more then ne of those cars. its alot quieter to drive to. Cochran installed a corsa catback on 2 of our GTO’s and unless u had the windows down u could barely tell it had a aftermarket catback.The car is just heavier and insilated better.but that will probably change the more GM gets involved with holden…