Anybody with an original part to use as a pattern can make a duplicate from a small piece of aluminum plate. I've done it pretty often. It's not "rocket surgery". Try an ad in the "parts wanted" forum- - - - -there are probably a bunch of distributors sitting around gathering dust where people have replaced them with various types of HEI units.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!