You may want to check out http://www.forcedairtech.com
I am planning on working with him for a turbo kit for my 90 Legacy. Probably going to go with the stage 2 kit, with an upgrade to the stage 3 turbo. It's a dual roller bearing turbo, the same one that is on the nissan skyline.
I know someone that has a stage 1 kit with a stage 3 turbo on his first gen wagon, and it hauls asss.