Take the guesswork out of upgrading your 2005-06 LS2 GTO, with the 455 HP Bobcat PerformancePac™ from SLP® Performance Parts. Each 455 Bobcat package includes our high-flow air filter, thermostat, 25% under-drive harmonic balancer, complete header to cat-back exhaust system, DiabloSport II Programmer with SLP Custom Tuning, and high ratio 1.85 rocker arm package, 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 package includes the following items:

• 160º Thermostat (100228)
• High-Flow Air Filter (25013B)
• Harmonic Balancer/Under-drive Pulley (100226)
• Long Tube Ceramic Coated Headers w/PowerFlo-X Crossover/High-Flow Cats (30168)
• Loud Mouth II Cat-Back Exhaust System (31561)
• 1.85 Rocker Arm Package (51185)
• DiabloSport II Programmer with SLP Custom Tuning (27010T)
• 455 HP Bobcat Fender Badges (pair)