Eatons are available in sizes: M112 & M90 & M62 & M45. Chances are your bearings are due to be replaced. The oil seals tend have to be replaced around 100,000 miles. This is the easiest and oldest kit on the market!
Pontiac Grand Prix GTP Bonneville SSEi 3800 Supercharger Nose 96-03 Snout M90
ZZP Aluminum Supercharger Vacuum Cap Fitting Tee Tree Eaton M90 Grand Prix GTP
Upgraded Supercharger Needle Bearing Rebuild kit Eaton M90 Grand Prix GTP SSEi
ZZPerformance Pontiac Grand Prix GTP L32 Gen 5 Supercharger Belt Wrap Kit
1997-2003 Pontiac Grand Prix GTP Supercharger 3.4" Quick Swap Pulley
Genuine GM 1990-1993 Pontiac Grand Prix GTP Switch Assembly-Side Window 10063386