KWjams...
I will do some research and get back to you later...
Derek used to have a cherry one that he raced ahrma.
Betor forks, rickman primary cover, single carb head...
BTW, Kibblewhite Precision machine is reproducing their high lift tappet blocks out of ampco45 bronze, so you don't have to modify the cast iron ones for high lift cams, or if you are running a Al big bore cyl.