With just a little creative machining, the pickup coil and module from a large-diameter HEI distributor can be adapted to work with your original point-type distributor housing. That would solve the body clearance problem and keep an original-appearing distributor in place with the vacuum advance as well. A high-output coil like a Mallory or Accel could be used with that setup if you think you need more secondary voltage for some reason.
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!