been searching and haven't found the answer im looking for. going to build a n/a k24/k20 engine and doing research. im aiming for 280-300hp. will have build 4p P&P head and built block. my question is what intake manifold should i run. i current have a RBC not P&P but port match to 70mm on my car making 230hp. will the rbc be able to reach the numbers i want if i port and polish it. or should i go with a bigger intake manifold with 80mm or 90mm like the ktuned intake manifold or skunk2 ultra.