Hello........here is the situation, I just installed a bassani x pipe with no cats and flowmasters and it sounds absolutley terrible. I need to know what setup is the best to run with the o/r x pipe. I like the look of the mac, but I have never heard anything. What in your guys opinion sounds the best with my x pipe?? Remember no cats so it will be loud but i want it to still sound like a mustang not like an out of tune white trash mobile. Thanks for any help you can give me.