I've actually been thinking about this too. I've seen the AVO turbo kit for my car (2002 Impreza 2.5RS) and have been wondering about it. I'm not going to be seriously looking to do major work to my car for awhile (I want to get out of college and get another car as a daily driver and turn the one I have into a toy eventually, but it won't be for a good while).
Figured instead of starting a new thread, I'd see if anyone had any info on it or any recommendations as to what to start thinking about possibly doing.
I graduate in December, but don't think I'll do anything major to my car for a good 2-3 years, so I'm definitely not going to rush into anything and really am just gathering info.