I believe KnuKoncepts can get you the upgraded shaft for a better deal than through Vortech. If you're doing it right, it wouldn't hurt to have the blower gone through, and possibly rebuilt if needed.
FYI - The last ADC turbo kit was just sold. They are currently working on a budget kit, but is yet to be unveiled. I think it'd be worth the wait, as you'll probably be able to pickup the entire kit for less than the S/C rebuild will cost you.
Mark
