Yes its all starting to come back to me now, they did use the LC cases and the engine mounts were different on the LC cases.
I see yours is a later alloy frame, I was thinking it was the earlier steel tube frame.
The Tuxworth connection could be right, Neil was running an F2 in a steel frame, and could well have ordered a later frame but had a really nasty crash at Aberdare which caused serious injuries effectively ending his career, so the story of the cancelled order would make sense.
Well done on the detective work Barry, I knew i'd seen Steve Henshaw riding a 350, in fact I remember being on the 350 grid with him a few times, although I was usually a few rows behind the likes of Steve!! but oddly the internet seems devoid of any photos of him on one.
PS Your bike looks lovely Mark, I can almost hear and smell it : )
Edited by Paul Collins, 21 October 2016 - 21:08.