Keith, Sterling has been using Ebay short-throw kits in his Mark II trannies for some time now. So have I. Honestly, the shift reduction is not only mild, but necessary. Think about this: when you shorten the *length* of the shift arm above the pivot, you give yourself less leverage. This will make the shifts *less* The reason short-throw shifters have a reduced height is to maintain the *ratio*. Trust me, it's minimal, and you will like the shift improvement. 99% of the ebay shifters are NOT crazy shift throw reductions. Also, one out of every few dozen has an issue I suppose. Sometimes the pivot is machined too small, other times there is a cheaper than useful plastic bushing on the shift lever (the bottom end).
But for the most part, it works fine. Just make sure to buy one with the machined lip on the billet aluminum riser piece. That's where the factory inner boot clips on with a c-clip. It's just a smallish rubber cap that sits at the very bottom of the upper shift arm.