The frame # is stamped on next to the steering head on the left side.I have a 77 but I think a 73 has right side shift,a 78 would be left side.73 has front disc brake ,rear conical hub drum brake.I think 73s were the last year of the 650s? although 750s were also available.
Other wise I think they are similar the 76/77/78 T140Vs
Thanks for all the help; I finally found the frame number. And thankfully they match. Now I have to decide what to do first and where to start the restoration process. I sure hope that manual gets here fast...
A forum community dedicated to Triumph Motorcycle owners and enthusiasts. Come join the discussion about performance, racing, cafe racers, bobbers, riding, modifications, troubleshooting, maintenance, and more!