57 supercharged Ford

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&itemE82068682&sspagename=STRK%3AMESE%3AIT
Anyone have any info on the item ?
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JP/Maryland
Studebaker On the Net http://stude.com
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