I made my own turbo to airbox pipe. You need to use the right materials. The turbo inlet is 2 1/2" and the airbox is 3" so you need this high temp elbow.
http://www.atpturbo.com/Merchant2/me..._Code=SIL-90EL
You'll need 3" pipe and a silicone coupler to go from the pipe to the airbox inlet. You'll need to put a 3/8"(?) inlet on the pipe for the vacuum line.