Hey guys, i need all of the creative genius behind the forum, I am designing and installing a custom exhaust similar to erics, my main concern is the diameter of the system. I am all ready to do either 2.25 or 2.5, I am leaning for 2.5, but wanted to hear what you guys thought. The system, like Eric's, will incorporate two X pipes to increase flow and twister mufflers . Let me know what you guys think, mmmkay?? thanks!! Either way, i'll post sound clips and installation pics