BOLT KIT Only - LSA LS9 Supercharger Hat and Fuel Rail Made in the USA bolts! <ul> <li>Package includes: 28 bolts</li> <li>Includes 19 bolts for supercharger hat, 2 bolts for water manifold, 2 bolts for MAP and ambient pressure sensors, and 5 bolts for fuel rail mounting</li> <li>If you are using the factory plastic supercharger cover, you will need four supercharger cover studs (GM #11589406) not included in this kit</li> </ul> <p>*bolts only</p>