My slave cylinder went out on my 1993 wrx and I need a new one will a slave work from any other cars that anyone k ows of like a 2002sti or wrx or something?

I don't know the answer, but going to a  car parts store on line should give you the answer. Just look for slave cylinder listed under several different Subarus models of about the same year as yours. If part number is the same, then you will learn about inter-change-ability.