This is not NFS - where you can add 50hp to a car by such parts. Specially on a car whose original HP is about 130ish, - you adding 50 means that you are adding 38% of the original HP - WOW OMG, I think you need to get a job at Honda, they obviously dont know how to build engines.
btw - this car comes with extractor headers equipped from the factory, they are hidden under the exhaust heat shield - it also comes with a cold air intake system with a huge silencer in between. Whatever you try to modify - usually downgrades the power you want.