I just purchased a 73 CB350F for $850.
So far I've: Rebuilt the carbs, cleaned the fuel tank, adjusted valves, changed oil, new tires, rebuilt master cylinder.
I've got it up to 86mph according to my phone GPS, afterwards it started running funny and I found the dowel pin on the back of the timing advancer chewed up and unable to time. So I have an ebay advancer on the way!
I'm having trouble locating either a CB350F or 400F upper triple clamp since mine is cracked.
Thanks!