Thanks for the response. I've checked out their site....they didn't mention the "ratio adaptor" that's on my T5. I'll give them a call in the morning. From what I've figured out, you can add the adaptor if you swap out diffs or tire sizes and use this to correct the variations without going into the transmission to change the drive gear. However, my adaptor (black plastic, with staggered hookups) doesn't have a mfg ID or any other distinguishing mark.
I'll probably wind up having to buy a complete unit to correct the 12% my speedo is off. I was hoping somebody else had the same setup so I could just get a set of gears to make the correction!!!
Sure hate to buy the whole cow when all I want is a glass of milk!!!!! Thanks again,
Dave