I have a complete set of Penske Double adjustable (8100 series) shocks for the C5 for sale (might fit C6 as well, but don't know for sure). They are hardly used (about 8k miles on them on AZ highways) and in excellent condition. This is the single best mod I made to my corvette! Nice firm ride, with excellent road feedback, but doesn't knock your teeth out!

PM me offers please.