not to diss, but i would wait until you can get a better kit , those greddy its are bolt on turbo kits, but wont give you what you want for your money. they wont go high boost and they are like stock size dsm turbos, i think they were td051, they are small . . . .
go with a drag kit or something like that for like $200 more . . and they even come with everything you need unlike greddy , you gotta get the intercooler and shit seperate. . .
check out importparts.com .or
http://www.exospeed.com/store.htm . . . they have great prices.