can be shortened to decrease the low end torque for better traction larger ... collectors will also reduce low end torque on a good track with lots of ... primaries or collectors will pick up bottomend power for a harder launch and ... diameters will also increase low end torque hooker adjustable headers have ...
the head exhaust manifold bolts to the bottom not to the side of head 44 will not ... pro-stock style cars with strut front end 89 will not fit models with rear a/c ...