Tim O'Connor can probably get you any parts you need for your distributor. He rebuilds and restores Ford distributors and has nearly any hard to find part you can think of (other than some of the bushings which can be tough).
Give him a call. Great guy.
http://428cobrajetcars.com/home
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“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)