single vs. double field alternator?

isn't the later square back alt rated 100 amp????? you know by now, i ask this cause i'm NO electrcian!! hey i did find a used multi meter, now gotta find info on how to read it!! LOL and NO my computer can't download VIDEOS! ( maybe the Easter BUNNY will bring me a new for X mas!?????? LOL

Just like the round back, they have different output ratings as well.
So just because it's a squareback does not mean it's a 100 amp.