Hi Mike,
If you can't find bushings specificly for a 1303 you may be able to retro-fit ones for another vehicle. I just got some for the 1303 control arms I'm using on my girlfriends '71 1302 and they look very close to the same diameter as the urethane bushings I installed in the rear trailing arms of my Triumph TR6 (TR6 bushings are longer though)
Tomorrow I will measure our new ones and post that info if it would be of any help.
Yetibone
