SLP PerformancePac, 1998-99 F-Car "Loud Mouth" Exhaust w/3.5" Slash Tips 350HP Take the guesswork out of upgrading your LS1 F-Body, with the PerformancePac™ from SLP Performance Parts. Each Stage 1 package comprises a group of jointly engineered induction and exhaust components, all of which work together to significantly improve performance without adversely affecting drivability. Best of all, you’ll save $50 over the cost of purchasing the parts individually! This Stage 1 PerformancePac™ contains the following items: High-Flow Air-Box Lid (21044) Cold-Air Induction Package (21033) High-Flow K&N Air Filter (25012B) F-Body Smooth Bellows (23065) Modular Loud Mouth™ Exhaust System w/3.5" Slash Tips (31042A) Stage 1 Fender Badges (pair) NOTE: Contents may vary slightly from photograph.