i have a 68 cougar with a 351C, and im looking to beef it up. gonna put in new cam, intake, carb ext. some real highflow stuff. and headers.
now right now the car has an almost new duel 2 1/2 inch flow-master exhaust system and im wondering if it will be beneficial to upgrade to 3 inch or will that be overkill? just looking to get the best flow possible. thanks.
now right now the car has an almost new duel 2 1/2 inch flow-master exhaust system and im wondering if it will be beneficial to upgrade to 3 inch or will that be overkill? just looking to get the best flow possible. thanks.