monte, l bought the engine complete and running off Ken wiltshire, from terang motorcycle wreckers victoria, Ken is well Known for his speedway sprint Midgets. I also bought the rolling Maico Frame off ken too, Even Ken
didn't know the size of the engine, but we did no that it was a very good engine and being build by The Hallams, its was going to be a ripper. and it proved itself, the Hallam Brothers engineering Knowledge is outstanding.