I just acquired a 1997 PA with the concert sound II system. Can
anybody tell me the wattage of this system and if there are any factory
amps in it as well?

I have a '97 also, which has the "U99 Concert Sound III" speaker option,consisting of 9 speakers (includes center dash speaker) and an additional amp (~ 150 watts). Apparently you have the "UW6 Concert Sound II", which I'm not familiar with, but I think has six speakers (dual front door and rear package shelf)and whatever the Delco radio puts out.