Upgrade to stock Alternator these days for the /6?

I am using a Bosch alternator for a 1989 Ram 318, rated at 100 amps (definitely not being run through stock wiring; there is a trunk mounted battery and I am using heavy duty feed through terminals on the firewall). I believe it needed a little fiddling with to clear the lower bracket, and I am using a rod with a spherical bearing at each end in place of the stock upper bracket. Works with stock solid state voltage regulators - I'm using one of my V101 units. It is able to run a 16" Flexalite fan at idle without discharging the battery.