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1966 Shelby GT350/GT350H / Re: Original Gas Cap
« on: June 21, 2020, 11:39:32 PM »
SM stands for Stant manufacture (Connersville Indiana). My home town. I have see SM STAMPED on caps up until 68 (Mustang). Cast into pop open ones (69-73). I have had a lot of caps that made it thru quality control that didnt have SM stamped on them even has screws instead drive rivits.