I need to know the length of an extension pipe so i can have it made before I do my swap. As some of yo may know I am doing a B18C motor in a 99 Civic EX. I am using my stock header and cat for now, but they will not reach. So in order for the person to make me a pipe i need the length from the end of my header to the cat once I sawp the motor in. Thanks for your help!