Has anyone bought these cheap eBay aftermarket shocks? They show to have a set of 4 for under 1000$. However they show the same shocks for all xlr and corvettes. I know for a fact several of these years do not interchange. The valving on corvette rears are totally different than the xlr. Some of the fronts do interchange. Im sure they have picked a middle of the road setting but wonder if anyone actually has installed them? If they work that will be a great price.