This Spectre Performance aluminum headlight funnel can be used to get cooler outside air through the high beam headlight bucket. The Spectre Performance aluminum headlight funnel will fit any 5.75 inch round headlight bucket found in vehicles with 4 round headlights. The back of the headlight bucket will need to be modified to increase the inside diameter to 4.125 inches. This headlight funnel can also be used as a finishing touch on a custom intake system for a hot rod or a classic muscle car. This product is sold individually and can be used with Spectre's headlight funnel screen part number 97891.