Here are some known vendors (listed alphabetically)
• INTAKES (CAI, SRI, WAI)
Electron Performance
Injen
K & N
ZZP
Spectre
• EXHAUST (single, dual, cat-back)
Borla
Doug Thorley
Flowmaster
HKS
Magnaflow
• TUNING (ECM reprogramming)
Jet Performance
Trifecta Performance, Inc. (Vince Geglia)
Vermont Tuning, LLC (Brian Blair)