I'm confused about which clutch I need for a 1946 3/4 ton, 235 6-cyl, w/ original flywheel, 11-inch pressure plate,throwout bearing & Buffalo Enterprise adaptor plate for a T-5. Don't know if an Astro van will work or do I have to have one special made. I want to keep the foot starter (6 volt). I've read all the articles & now I'm confused. Any help would be greatly appreciated.