Hi I read with interest re Fron Purslow,  I have one of his 500 BSA special, I have been trying to get more info on the bike, Its got Frons Name in several places on the bike, I have rebiult it and found that it has Golstar cams, and is in all apearences looking like a Goldstar appart from the cast iron head and barrel, its got a rev counter, swept back goldsar silencer, Birani rims, I believe Fron used to race BSAs or so I believe. I was wondering if this could have been one of his racing engies, Its a 500 engine in a 350 frame, thats what got me wondering. if you could shead some light  I would be most grateful, Dave Scott    (buz)