Don't forget about the safety things like a good wideband and boost gauge. You definately need to consider how you will be monitoring your engine. That's one of the most important mistakes that alot of guys new to boost make (guilty). No way to see if you are running rich or lean= big boom, clank clank.

I CONTRIBUTED TO THE WIKI!
ah... turbo. I love the turbo, the boost, the speed, the sound.
and its all better when you do it yourself. cheaper too.