As for choosing a turbo, I'd go with reading Garret TurboTech 101:
http://www.turbobygarrett.com/turbob...o_tech101.html
and Garret TurboTech 102:
http://www.turbobygarrett.com/turbob...o_tech102.html
and then looking through their product line:
http://www.turbobygarrett.com/turbob...ochargers.html
comparison sheet:
http://www.turbobygarrett.com/turbob...ison_sheet.htm
You really don't have to read the turbotech stuff, but it'll help you understand the dimensions of the turbos and the efficiency islands that they show.
If you still have questions about choosing one, I'll do my best to help tomorrow.
I would do this for you, but I feel like absolute s***.
