Does anybody know how much power the stock radio on a 85 IROC has ? Want to change to a Pioneer CD system, but not sure how much power do the speakers handle ?

 

4-8 watts are what I believe my stockers said.
I would invest in new speakers at the same time. Not sure what brands are available over in Swiss land (nice country btw, went on vacation to Zurich for a week one winter when we lived in Italy).