I have a pair of slightly flatenened 4" BDS fronts in the garage if you are interested. I was about to get 6" BDS all the way around until I found the fine print in their "no fine print" warranty, which is that returns are subject to the policy of each reseller. For example, my reseller said he would take my old springs back, I could by a new set and then if BDS warrantied them, he woudl refund my money...If I didn't want to buy a new set, I would have to wait until mine were shipped to BDS, and a new set sent out...Make sure you ask whoever you get the springs from what their policy is.