The one on the far side of the photo is going through the wheel well, right near the front, and through the bash plate. the closest one is going underneath everything, doing a few "as gradual as possible" turns, through a hole in the bash plate and up to the intercooler.
Try find a MA61 with M-TEU in it... they're rare, but they're also intercooled! Might be good for a clue on how to pipe it.