Take the guesswork out of upgrading your 2005-06 LS2 GTO, with the 421 HP Bobcat PerformancePac from SLP Performance Parts. Each package includes our high-flow air filter, thermostat, DiabloSport II Programmer with SLP Custom Tuning and our catalyst back exhaust system with our built-in PowerFlo-X Crossover, 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 package includes the following items:

• 160 Degree Thermostat (100228)
• High-Flow Air Filter (25013B)
• Loud Mouth II Cat-Back Exhaust System (31561)
• DiabloSport II Programmer with SLP Custom Tuning (27010T)
• 421 HP Bobcat Fender Badges (pair)