Flowmaster 50 Series Big Block Muffler - 2.75" Dual Inlet / 2.5" Dual Outlet HTA25001 and 70cc exhaust ports

and 70cc exhaust ports

375 in W x 20 in H x 3 in D

it's been one of three options: weld in a sump to your tank

Tuning Carb

including General Motors

Flowmaster 50 Series Big Block Muffler - 2.75" Dual Inlet / 2.5" Dual Outlet HTA25001 and 70cc exhaust portsThe 50 Series Big Block muffler is made for more than just big cubic inch engine applications. Its large case size with internal tuning chamber provides mileage and power gains along with maximum sound control for a quiet interior tone, even under heavy loads. Well suited to heavy duty vehicles such as full size trucks, SUV's, RVs, and tow vehicles. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Features: Durable