I have a stock 351c 2v with some shorty headers and exhaust. Im looking into buying a intake, carb and cam soon so i can tune up the motor with the new modifications. My question is, what is the best low end torq manifold to buy for a 2v. I was looking at the performer, performer rpm, and the weiand x-celerator. Not sure what would build me the best low endtorque. I want to buy a 4v manifold that will fit the 2v heads.