True , it has a k2 title and helmet hooks but that's a frame deal.
Early forks, late gauges and light console, late seat latch, engine number begins with 1 not 2 as in k2, late tail light. Who knows. I remember this bike way back into the late 70's and spoke to the engine builder before he passed from als. He didn't remember the cc's, thinks it's an 836. It runs like one, the 4-2 hooker is louder on this bike than it was on the sandcast bike.
I should make a run to the nursing home to see the PO, he was a mechanic before a leg injury took him down.