Guys I built up a nice 347 and by the time I got it running, I grew a few years older and that coupled with the bigger motor displacement has created a dislike for how loud this thing is. I have a MAC 2 1/2 " cat-back now and I'm wondering what is quieter. I want it to be about as loud as a muffler only car. Basically, I don't want to burst my ear drums every time I go WOT. Any suggestions?