SLP PerformancePac™, 1999 F-Car LoudMouth Exhaust w/ Dual/Dual Tips 400HP.

Take the guesswork out of upgrading your LS1 F-Body, with the PerformancePac™ from SLP Performance Parts. Each Stage 3 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 $100 over the cost of purchasing the parts individually!

This Stage 3 PerformancePac contains the following items:

• High-Flow Air-Box Lid (21044)
• Cold-Air Induction Package (21033)
• High-Flow Air Filter (25012B)
• F-Body Smooth Bellows (23065)
• Modular Loud Mouth™ Exhaust System w/2.5" Dual/Dual Tips (31042)
• 85mm High-Flow MAF Sensor (23060)
• DiabloSport II Programmer with SLP Custom Tuning (27007T)
• 1.85-Ratio Roller-Tip Rocker Arms
• Tuned-Length Long-Tube Headers with Aluminum-Ceramic Coating (30051)
• Header-Installation Kit (30054)
• High-Flow Catalytic Converters (31037)
• Stage 3 Fender Badges (pair)