I like the newer Grand Prix..IMO they ride better but I LOVE the wide look of the older body style as far as the engine and SC goes..well they all are the 3.8 but the 04+ have the Gen V the better SC but if im not mistaken the older body style has the better heads... (I have been wrong before! So someone correct me if i am!!). The compG is hands down prolly the best! You got the gears, and upgraded suspension on top of the GenV blower! If I was you I would for sure look for a Comp G!