[Batman]

You need to balance your sway bar and suspension set up, if you put a huge drag set up on the back you're car is going to oversteer big time. Personally I don't like using lower spring rates then the car is supposed to have if it is a driver. It just adds wear and tear to your shocks and can put you in a hairy situation in a panic stop or wet weather. Shocks/struts are made to dampen the spring, not support the weight of the car. Eventually with a soft spring and high shock pressure you could risk blowing out a shock which can cause a very nasty accident, especially without a good supporting spring to hold the car up. From the performance side I cut some 1.5XX 60's yanking the front wheels with slicks, skinnies and stock WS6 shocks struts and springs and just solid WS6 size swaybars. I don't think at your power level you will gain enough to warrant a drag race rear suspension. Do you really want your car to drive worse for .01 at the track? IF it were me I would get some nice slicks/drag radials and put air bags in the back of the car to keep it level. The bigger sway bar is a good idea but talk to the seller and make sure it won't upset your car as a driver before you buy a bar meant for straight line driving and if it will see if they have a complimenting front bar. Since you already have the adjustable shocks that should be plenty for your car until you hit higher power levels. Don't look at what that 9 second car has and think because he has it it will work the same for you, if you know what I mean.