This injector replaced the Mk3 for Funny car and Pro Mod racers as it has the larger 5.5 inch butterflies. The butterflies are set further back in the tubes for improved air flow. Accepts all standard fuel injection parts.Great in situations on a Pro Mod car where height is a factor for rules against the roofline. Outlet openings from 9.5 to 10.5 inches long.Stands 7.75 inches tall from base of supercharger.

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