The later model Chevy inline six point type distributor (194/230/250/292) can also be adapted to the stovebolt engines, and converted to HEI configuration. Repair parts such as vacuum advance units, caps, rotors, etc. are more plentiful and less expensive than the early style distributors.
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!