My BSA is a 1951 B31 350, it has rigid rear end and tellie forks and it's all more or less standard. Apart from a rear carrier off an M21, I find it the ideal bike for country lanes and back roads but it's well out of it's depth on motorways and dual carriageways.
I have owned the bike about three years and have done quite a few miles on it including one run of over 900 miles doing the ACU National Rally.
