Whatever you're trying to do is going to defeat the purpose of the 2J intake. Just buy another hot air intake or keep your stock one. The 2J intake is meant to suck air from the cowl to get the coldest air possible. If you put a 90 off of the turbo the intake will end up in the bay and thus will suck in hot air. I also think it will not work unless if you went directly over the manifold which again defeats the purpose of the intake.
Cut the cowl or buy a different intake