I bought a bunch of old supercharger kits, and I think one air horn is for 57 Fords. It has the 5 1/4 neck and a inside tube like it would be for the early Ford 4 barrel. It's on ebay here: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=4582068682&sspagename=STRK%3AMESE%3AIT Studebaker On the Net http://stude.com My Ebay items:http://www.stude.com/EBAY/ 64 R2 4 speed Challenger (Plain Wrapper) 63 R2 4 speed GT Hawk 62 Lark 2 door 61 Hawk 60? Hawk 55 custom HT 53 coupe rod. 53 Starlight