Hey Chef, welcome. I too have a 2300sc, though a 1995. Still similar. Are you installing a new port window or replacing existing? I don't have one, on the list. SeaPuppy installed one, posted good pics of it.
My big mod this season is a swim platform. The boat has an excellent rear step design but with kids and my diving ambitions (breathing underwater), it could use the extra space.
As for the Olds, sweet! I have a 67' Delta 88 convertible for when I'm not in the boat.
Post some pics of both when you can. I also am on the Classic Olds Forum, http://www.classicoldsmobile.com/forums/
FRDMFTR is my handle there.