This is going to get me flamed, but the turbo knowledge here is very VERY minimal, come over to clubGP and reap the benefits of their knowledge. I am lucky enough to have a guy who lives near me who is a turbo wiz with the GP and fiero's. The atmosphere here is better but the knowledge over there is phenomenal. I learned more in a week there than I would have in two months here.
Why? Just read up on some information learn to read CM's pick the turbo that is right for you and you can even piece together a set that is cheaper than any kit with enough time to collect everything. Tuning shouldn't be to hard if you already know how to do it.