Just thought this might interest some of you. This is a very rare item for any true Cadillac fan. 1946 Cadillac Sedan Specification Kit from General Motor Proving Ground in Milford, Michigan. Original Photos! 1/1 Go to www.ebay.com Item #7110702409 Seller Name: cubevandam Even if you don't place a bid it's well worth your time to check out a true original spec sheet, dated October 1946. Thanks for your time and trouble!! Keep On Cruisin' Bryan M. Sundberg