Evening Dennis, I used Fox's. After putting them on my first SMB I'm sold. They are about the same price as Bilstein's and so good on these vans I'm afraid to try anything else! I think most people get them from Agile Offroad but there are others selling them now including Sportsmobile but I like to support Agile. Great guys. Give John Brindell a call and ask him before you buy. He's very sharp and can probably tell you the difference in the two without trying to sell you on Fox's.