turbo manifold ?????

Thanxs everyone for your coments. I will go with the stock manny after all. And yes I have some mods. I have my balance shaft removed, alu. flywheel, fornt mount iner., with 2.5 iner pipes, 3 inch exhaust, after market fuel rail barded lines, fuel reg. 680 injectors, 255 wlb pump, underdrive crank pulley, after market bov,safac 2, msd dis2, and just sock turbo and intake for right now. Thats why I'm asking about the sheetmetale intake and exhaust manny.if it would be a good idea or not. I just want to boost like 18psi no more.