looks british.? Engine is BSA 650cc from 1962, so BSA Chopper (for comparision, 1965 BSA A65 Lightning) http://www.realclassic.co.uk/bsa03112100.html
Not really a chopper - just a Lightning with its forks extended. It probably would suffer lubrication problems with its gearbox.
possibly british also.? see also pics here:- /vehicle_44568-unknown.html
Poosibly japanese: CB 350 Honda is possible... 30% sure only... But it is not an Harley-Davidson!
Yes, Harley-Davidson. It loads 'Panhead' engine from 1948-65.