Will this work on my stock '94 Vette? Anybody ever used one? Have any ideas about what they will and won't do? All thoughts are appreciated. Anybody that wants in let me know. If there are 3 or 4 of you that would like to try it, I'll buy it for $75 (or cheaper) and I'll send it to the next guy for $50, then the next guy pays him $25, etc so we all have the same $$$ in it.