GS turbo conversion..help please

okay fellas, im looking at a stage 2 STAR performance turbocharger kit, i dotn know shit about turbos to start with, so heres the site i got it off of http://www.overboost.com/obs/product.asp?pid=921 can any1 please help me out? i need to know if i have to buy anything else in addition to this kit to get it installed and ready to run.

Go to the performance sub forum and read the stickied threads... I didnt do a write up on this for nothing!