Since your car is an 11-14 you should just forget about the GT350 manifold. Takes too much to get working and you lose the main benefit over the boss, the charge motion plates.
I would either keep the stock manifold (and maybe get it ported along with the throttle body), or get the Cobra Jet manifold with one of the bigger throttle bodies (twin 67, twin 72, or monoblade. the twins have better drivability for a daily). The boss loses too much torque and the power comes in too late, especially if you keep the stock throttle body.