Hi.Theres this 95 supercharged bonneville for sale locally here for $750..The car has 160k on it.Some minor body damage.The supercharger makes a rattle noise.Im assuming its the coupler.The guy says its the nose cone bearing but I dont think he really knows.I havent had the chance to turn the snout pully to see if it is the coupler.What would the bad bearing sound like?Like a bad wheel bearing?Mabee some chirping?..Any way,Do you guys think this is a good buy?He also said the a/c needs a charge.Thanks