Proflow Distributor, HEI Street Series, Vacuum Advance, Black Cap, SB For Chrysler 318, 340.360 - PFEID510EPart Number: PFEID510E Proflow Economy Street Series HEI distributors feature a compact design with a Bosch style module, cap & rotor. These units offer calibrated advance curves that are optimised for maximum combustion efficiency, and the elimination of detonation damage and throttle ping. The distributors offer longer term durability and a higher voltage spark that permits a bigger spark plug gap, resulting in more power and reduced plug fouling.