hi andy
I know they're getting (what I call!) slightly daft money, but maybe he'd be able to find a featherbed Norton ES2?? Or maybe a Model 50 would buy a better bike for the same cash? Almost 100% parts availability, (admittedly varible quality sometimes!) and pretty versatile both as a project basis and final bike.
Just a thought, but I'm biased towards Nortons!
or (from classic bike guide mag this month,)
www.cotswold-classics.co.uk have a 1960 "Velo Venom Special" (tho thats perhaps ...) with 350 MAC engine (ah...!) first kick starter, runs well, bargain - only £2995
So they are there...
a