i have straight pipes with cut out so i can run open at the strip but i was thinking with the 230 intake valve and the 188 eh valve that 2 inch by 30 long would work better on the dyno my torque curve stayed over 400 lbs from 2500 all the way to 5000 but acording to the dyno every thhing fell off after 5200 but with 456 rearend i go threw the traps at about 5800
416 at 5000 hp 467 at 4000