External voltage regulator

[JT1930]

Fun Projects company makes a voltage regulator for a model A 6volt generator. They are backordered though. So my question is if I get rid of the stock cutout on the generator and get one of these 6volt external regulators and mount it on the firewall like most v8 guys do. Would that work if I wire it correctly? Just an idea or I’ll be having to wait for fun projects to catch up. Thanks all.