This is the basic kit for converting from Speed Density to Mass Air Flow, in both the Mustang and Mark VII. The meter itself is a stock 55mm unit, but for an extra $170.00 we will upgrade you to a

Eliminate that antiquated Speed Density System and upgrade to the more effective and efficient Mass Air Flow System. Once you have Mass Air Flow, you can now upgrade other engine parts such as Cams, Heads, Exhaust, Etc., and actually realize