limit on 98 cavalier alternator

Hey, i got a Chevy cavalier 98 with stock alternator. I want to know how much ampere can i add with Stock Alt. Big 3 alerdy upgraded. For now i got a total of 100A of load with 2 amp.

That is a very hard question to answer.  There are vehicles out there with thousands of watts worth of sound system using their stock alternator, and have been for years.  Sometimes they will last forever, sometimes they fail.  It all depends on how hard you play it and if it has any cooling time between the 1000 watt demands put upon it.  I am sure you will probably have some dimming issues, but the 100 amp draw should not cause any other issues.

A stock *Replaced but still same as stock* can handle how much Amperage?

just replaceed a alt on a late 90's cavaier,  stock replacement was 105 amps.