Voltage regulator

Im still trying to figure out why you want a 100 amp alt ?
Unless youve upgraded your 40 year old wiring, your in for a world of hurt.
What are you planning on running electric wise ?

Electric fan, electric Fuel pump, while it is still a six messing around with HHO which takes 30A to see what I can do with mileage, The alternator right now is maxed out when the HHO goes on. That's the main reason. This is a old mans car sleeper and found the craziest cb with a telephone handset to go with the dual trunk antennas, just for fun might throw in a linea.I had the HHO on my kids 93 Mustang and he got 39+ with a 2.4, Not going in with the 440. All new wiring with the new stuff and a separate fuse block. Got it might as well play when it still has the 6 in it, plus it gets me away from the wife to drink my customers trades (I have a small Hop farm), yes I am retired from a real job living a dream till my liver gives out!