These spring perches are the ones produced by T&A Shocks (see eBay listing). I've had them on my GT for over five years and recently upgraded to Scott Ahlman shocks. These adjustable spring perches permit lowering of the car as well as corner balancing, both of which I did to my own car when I installed the perches. They are in excellent condition except for scratches where the spring bears against the perch sleeve (all sleeves will wear there, new or used) and near the ring adjustment holes. I will also include the ring wrench, normally a separate $95 charge from T&A. This package, including the wrench, sells new for nearly $700 before shipping (and well worth it). I'll sell mine for $500 with free shipping. Note: I can ship the perches immediately from Florida but the wrench is in Jersey and will have to wait until May. I can be reached at "hmintz1@optonline.net" or 941-445-5786.
Howard
Howard