OK...there's a very good chance that i may buy a JR supercharger pretty cheap in the next couple of days...up until recently, i had planned on going turbo, but with things going the way they are going, i may have to put that on hold, and the supercharger will be an easy speed fix for now...

so my question is, how can i tell if it's in good condition? he says it's got about 15,000 miles on it, but what could i look at to find out? rotors?discoloration?