I sell the diff and required bearing and shim, housing, output shaft for $250 plus $25 shipping so $275 to your door. Now that I know what you are working with I can give you some suggestions. The reluctor wheels are aftermarket only pieces available from Intense and ZZP if I am not mistaken. They are custom made parts and I have no suppliers for trans parts that deal with them as they are specialty items to this community. Using a GTP pcm is certainly the best route to go with for doing a top-swap and you are correct that the gear ratio will be different and if not compensated your you WILL have trans problems! If custom tuning is out of the question for you I will reprogram a pcm making gear ratio changes only-no engine tweaks for a fee of $50 plus shipping. The reluctor wheel setup is fine to fix the incorrect gear ratio code problem that will be present but I think that leaves you with the speedo being off a bit, so $60 for a custom reluctor and $100 for a speedo recalibrator adds up fast and tuning is the best route to correct the problem.
