Pypes Exhaust SGG10S Street Pro 2-1/2" Diameter 409 Stainless Steel Dual Crossmember-Back Exhaust System for GM G-Body PYPES PERFORMANCE EXHAUST SGG10S 78-88 G-Body 2.5in Exhaust w/X-Pipe Dimensions in Inches (LxWxH): 60.5 x 60.5 x 16