Hi there, you can also try British Only in Michigan and they're at
www.britishonly.com. And then there is MAP in FL. I can't find MAP's number right now but both are very good and very knowledgeable help. And even Domi Racer (although mostly Norton stuff) may have what you're looking for -
www.domiracer.com. We deal with all three of them regularly and between the three of them we can restore most of the British bikes from the ground up. Hope this helps. Take care.
