[DanEC]

Phil - if you bump the amperage further with a 1-wire alternator, you may want to consider switching the amp gage out for a volt gage too. All that amperage goes through the gage. I think in addition to doing away with the external VR that you also lose the red light charging circuit. If you keep the 4-wire alternator, the solid state voltage regulators should work as well as the older mechanical points type.

Have you taken any voltage readings with the motor running?