2.5 inch or 3 inch

demon1515 said

i know some people will say back preassure flabla blabla hell no, race cars do it with open headers and do it better think about it!

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Back pressures for small engines that do not produce enough torque at lower rpms on the street.. So with a built 440, I'd say 3inch for performance, 2.5 for street manners, but who needs those? 8)