That would be pretty hard to do. The double wall is fairly hard to deal with and the ports are aiming the wrong direction. If you wanted to do something simple then just do a short backwards version of the stock manifolds pointing up and forward. But they cannot be flipped. You could maybe build a y pipe to the stock manifolds and bring that back around to the front for a turbo just leaving the stock manifolds alone. You would probably have to undermount the turbo to get the exhaust back out. But honestly that is the problem that is hardest to deal with is getting the exhaust out through where the manifolds are.
Just easier to make something new that is going to work.