I would say, go for the suspension. You would be so glad if you did. No more chassis roll and no more slowing down while your turning becuz u took the turn a little fast. Turning is a much more comfortable action when the car is lower because of the reduced chassis roll. You could get like KYB AGX's for 340 on www.groupbuycenter.com and then you can get springs for another 100-200, and then you would have some money left for a catback.:thumbup: