The header speaks for it self. The article is re-published in Vintage Bike Magazine.
Click on below link.. read John Healy's article in Vintage bike magazine and come back here and discuss it.Changing Triumph 650 4-Speed to a 5-Speed
You can also find more info in a previous BritBike forum thread in the Triumph sectionInstalling a 5-speed in a 4-speed 650
And in this threadWhat's the benefit of 5-speed conversions?
PS: I'm thinking of moving this thread to Triumph Bulletin Board
so that it might be seen by more Triumph enthusiats.