STILLEN 504375 Stainless Steel Cat-Back Exhaust System - 07-08 G35 Sedan Generation 2 Design - Great Power with a Quieter Tone Fits RWD & AWD Models; Stainless Steel Construction - Dual Path Piping w/Single Muffler System 13lbs Less Than Stock Exhaust - Easy Installation Polished Stainless Mufflers and Tips; Limited Lifetime Warranty