The spring perch difference on the TEL KYB AGXs that we use for GVR4s actually lowers the car a bit, IIRC. Not much, but it's something to be aware of. Since TELs are lighter than GVR4s, some folks don't care for the way the rear AGXs damp the car, especially with stiffer springs. I've found them to be very livable for both street and track with 220 lb/in rear springs.
I have a set of unused Whiteline springs, NIB, that'll be going in a For Sale thread soon. PM me if you have interest.
-Jim B.
280/1000
1432/2000