You have to get the part numbers and look them up to get the output. It is not listed on the alternator.

Look for the pre-Magnum engines for a V-belt high output alternator. They're easy to spot. Look for the half-size alternator body.
You will have to trim the output stud a wee bit and tweak your brackets for the belt to line up.

I've been running one for years on the hot rod. It handles the monster Mercedes cooling fan, EFI system, 1000 watt Kenwood amp, power inverter for the laptop, and all kinds of other stuff.

I ran a 4 gauge wire from the output stud to the starter relay.
Since the fan flashes to 59 amps on startup I wired it directly to the alternator.