Tony,
I've used American Classic Parts and Classic Parts of America and had real good luck with both. Also used a lot of others. You can get those clutch head bits at any of the parts places, maybe even NAPA could get them for you. I have a Mustang II in my '49 and the best advice I can give is to get a real good one! I got one made by a local rod shop and have had nothing but trouble. Fatmans, Heidt or RB's Obsolete parts have real good crossmember kits. When I redo mine it will be one of those.
