The only thing that can be a pain in regards to the injectors are the green brackets. Everything else is pretty strait forward. Just be sure to keep track of all the rubber rings that go with the injectors. Fuel leaks in the engine bay are baaaaad!

Check out TurboXS's site for install instructions of their Stage 4 kit. Since their stage 4 includes both the Sti injectors and a walbro fuel pump you will find the instuctions here.

http://www.turboxs.com/Stage%204%20I...structions.htm