Looking for an alternator with 300amps or more and a high output at IDLE. Anyone know if they are made?

I know Iraggi has one with 240a and DC has a 275a..

 

Nope not really its too much amperage for such a little housing they get to work with. Is it possible? Probably is it efficient? probably not. Nor cost efficient. You are gonna have to just get a bracket for 2 200's Amp ones or maybe 2-150 amp ones if they make it. Power bastards seems to make brackets for dual alt setups.