[Chambers]

If you have the capacity to weld then it may be easier and cheaper to just make a front facing intake manifold, with a larger throttle body.

If not then modify your current intake manifold to a front facing status, as in cut open the front side of it, then weld the old TB hole up and put a new flange on the front side of the manifold, that way you retain all your stock engine parts but have the front facing intake.

Good luck.