I am resurrecting this post. :thumbup: I am about to get started and I have another question on the machine work. Is it worth the money to have the head ported, polished, or both? Intake ports, or exhaust ports, or both? I have Greddy 4-2-1 ceramic coated headers which will be installed on reassembly. AEM cold air intake is in place and will stay in place. Any comments are welcome. Thanks.