For wastegate placement, the optimum setup is to have the pipe from the manifold to the wastegate to be at the least angle possible. This will flow best, you don't want to have the gasses making a right turn to exit out of the manifold. It is easier to balance manifold pressure with one...
Well, I just joined the forums.
One thing you could do is place a small intercooler between the blower discharge port and the discharge manifold that leads to the lower intake. Now, the problem with doing this is that you will lower the resting position of the blower and alter the belt geometry...