Matchless G-50 CSR "prototype replica"

This is a "what if" bike, put together on the assumption that Matchless screwed up not building their "street bike" (to obtain approval for AMA Class C production based racing) by tacking on minimal street equipment to the road racer.  Instead, they put the G-50's fine motor in the heavyweight lug and tube street bike frame, resulting in an overweight, ungainly and largely useless package which they called the G-50 CSR.  The historic G-50 CSR was a G-80 CS with an aluminum crankcase G-50 motor in it (most G-50 clubman road racers came with magnesium alloy crankcases).