I just put in a custom exhaust w/ a resonator. It so loud. I want to put a resonator on it. The muffler guy told me to get a glass pack muffler as a resonator. Another muffler guy told me I should get his resonator that has bigger holes and the holes are pitched at a 45 degree angle. This would "catch" exhaust gas better. I want to know which is better in reducing the loudness and which will give me better performance? What should I do?