We recently purchased a new 2008 i14 and are very pleased with it. I'm thinking of changing one of the drives to ST Turbo fins. Since the drives are new would trying to sell one and buying a new V2 with ST Turbos already part of it be a better move or would doing the upgrade and adding the screw-in mast sprocket to my existing drive be the best deal? I have no idea if a reasonable after market exists for these old style Mirage Drives now that the V2's are out? Any ideas/offers would be appreciated