40 Series - 2.50" IN(C)/OUT(O) - Aggressive Sound 1971-mercury-marquis-esi4030523 5 in Long - High

5 in Long - High Temperature - Braided Fiberglass - Black - Set of 4

Fuel Cell Mounting Strap - 24 in Wide x 10 in Tall - Steel - Black Primer - RCI 2200 Series 20 Gallon Fuel Cells - Kit

1 - Steel - Black Powder Coat - 50 oz External Balance - Small Block Ford - Each

Fitting - Hose End - AQP/Startlite - Straight - 12 AN Hose Crimp to 12 AN Female - Aluminum - Red / Silver - Each

40 Series - 2.50" IN(C)/OUT(O) - Aggressive Sound 1971-mercury-marquis-esi4030523 5 in Long - HighThe Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.