hondacivk

ok, i have a civic w/ a LS motor. im planning to turbo it. i have a t3 turbo from a sabb, w/ a internal waste gate. im not sure if the waste gate is in good shape. So i want to use a external one. i found som plate on ebay that just covers the little hole on the waste gate but im not sure if thats good for the turbo. just blocking it off and all. all im boosting is 7 psi should i use the plate and get a external waste gate or use the internal one? also is it possible to hood up a dsm fuel rail and just use the stock 450 cc injectors one a ls motor? if so what do you have to do to hook up? thanks