Voltage regulator upgrade? Keep frying voltage regulators with swap

you need a heavy duty voltage regulator to handle the extra amps on the alt .when we upgrade the alternators on the emergency vehicles we also change out the regulators. go to a local rebuilder that handles truck fleets/ note these are not cheap. the field wires only carry 2/3 amps on a regular vehicle/ about 6/7 on heavy duty systems its not much of a difference but its 50% higher, in may be cheaper to get a different alt with internal reg.