Steve (Barlow) had got most everything you'll to make your Triumph stuff fit your Notorn stuff and all the add on stuff tank like tanks, brakes, and seats. For your Triumph parts and know how, I'd go to Hutchinson Cycle. He's been doing Triumph Pre and Unit twins for a long time and carries most items in stock.
Aaron
www.triumphman.com
Aaron
www.triumphman.com