Re: besy 2v manifold
There is no online comparison etc. If your not reving beyond 6000rpm the Torque-power is your manifold. Beyond that non high-rise you have the Weiand Xcelerator (most commonly used). The high-rise you have TFC, Funnelweb, CHI and there is another one but I can't remember it for the life of me.
XB Fairmont (street car) firstname.lastname@example.org.