We did this over a year ago before a rolling road with the VxSCC that was in Total Vaux mag, so I can't remember everything sorry

We cut off the small brackets and filed down what was left on the vectra c pipe

We removed the pipe circled from the air box and used the screws circled also to hold the pipe in place and put the adapter pipe on the wrong way to get it to fit right with no gaps

Sorry I can't remember where we got the two screws from dunno..
Sure we removed them from sumwhere at sum point.
Hope this helps 8)
Rob