if you're planning on setting up the suspension for the track, I'd do baseline suspension uppers and lowers in the rear, TRZ in the front. baselines uppers include a relocation bracket to correct the geometry of the suspension to aid in traction and efficient launches, if you're into that kind of stuff. if you're doing afco coil overs all around you'll save a ton of money by using a beehive spring that goes from 2.5" to I believe 5.5" or close to it. that way the factory mounting position on the top can be retained but that 2.5" end on the bottom can sit on the adjuster and be used to raise or lower the car. you might also want to change out the bushings on the top of the rear end where the control arm bolts into to one of those that Wolfe race craft or TRZ sells. I can't remember what they're called, I think spherical bushings?
a nice sway bar will be needed also. can't really go wrong when going to an aftermarket one, TRZ, and Wolfe's sway bars require welding in but are considered top notch when setting up a car for the track, but other bars like the HR bar is proven to be very good also.
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