Does a dealer only sell lifters as full sets? I got a half set to replace my MDS lifters from Inertia Motorsports in TX, but I think he just got them from the dealer. Not sure if they only sell them in sets or not though (half or full depending on MDS maybe?). They may have a spare valve laying around too. I called down there when I was looking for a replacement piston because I know they do a lot of work on the 3G stuff, since they do big valve head upgrades now they might have some stockers they took out.