1966 Hard tail BSA 650 lightning Rocket, bore '60 over, high comp. forged pistons, sifton cam and lifters, ported and polished big valve head, TT exhaust, 32mm Amal smooth bore carbs, with K&N filters, and yes it will eat any stock 80inch harley, and I have had 'er for 26 years, and I have owned every thing from HD's to bultacos and AJS, a total of 17 bikes in my life time not including when I had a M/C shop, and I have a total of .... broken..... b.... thats bad luck won't mention that,