GM 1 Wire

I have to replace my alternator and since I'm running 2 amps i thought it might be a good idea to run a higher amperage alternator. Are there any direct fit alternator with a 100 amps or more? Or would the option be to get a GM style 1 Wire alternator?

I could still use some help if anyone has any input or info about other than stock alternators I would be very grateful.