Howdy Gary:
To the best of my knowledge, Mallory is the only aftermarket complete replacement distributor for our sixes. They offer two, a dual point and an electronic unit called a Unilite. Both are high quality and expensive. Both are quite adjustible. Both can be had with or without vacuum advance. Clifford used to be their main outlet for six cylinder engines. Maybe they still are.
There may be some after market options from Oz. Adam is the guy to fill in that piece.
Adios, David
