I put mine right in front of the turbo, easy to install, plumb and works flawlessly.
As long as the turbo isn't on the manifold, you CAN install it with the manifold on the engine. Just stuff a clean rag into the manifold, behind where you want to drill. When you remove the rag, it takes any drilling shraff with it. This works only if you have a LONG drill bit, since the intake will be in the way. It's best to do it with the manifold off of the engine though.
Hope it helps,
Warren