Flowmaster American Thunder crossmember-back dual exhaust for 1967-1972 Chevrolet C10 and GMC C15 half-ton 2WD trucks with V8 power and rear coil springs. It fits short- and long-wheelbase trucks.
 
A built-in H-pipe joins the two banks ahead of the Super 44 mufflers for a moderate-to-aggressive exhaust note. Four tailpipe exit layouts let you route the pipes around the rear bumper, and the system provides clearance for substantially lowered trucks.
 
2.5-inch mandrel-bent 16-gauge aluminized steel tubing. Two Super 44 mufflers, H-pipe, pipes, hangers, and mounting hardware included. Header reducers and factory-manifold downpipes are not included. Part 17654.