Well The distributor cap that I thought I had was the incorrect one. I spent 30 mins on the phone with Mercury parts dept to have them fax me information onthe wrong motor.<br /><br />If any one knows where I may be able to find one I would appreciate it.<br /><br />the serial number is 2122182 1970 Merc 650 Thunderbolt 65HP 4 Cyl.