The common misconception is that the alt drives an amount of current. That is not true.
you can put a 2000 amp alt on any car and the car will not burn up.
it is based on the draw the car needs.
At the same time tho the wiring is usually sized for the stock alternator. If you need a bigger alternator you're going to be pulling more current then the wiring was designed for so you should be using bigger gauge wiring to match. But if someone is just upping the size of their alternator for the hell of it then it doesn't matter.
