Welcome to HS. As far as power gainers go, it would help us a little to know how much you are willing to spend. If you have the money, I'd go FI. If not, start with the basic bolt ons, I/H/E. AEM makes a great intake, and I think that would be a good place to start. If you are interested in a turbo, I'll let the turbo guys handle that one
Sounds like you have a great car. Any pictures?