What do you guys think of this set-up? I am looking for something that is as quiet as possible, but also free flowing enough to make a difference. The most important thing I am looking for is a little more power. i realize it will not do miracles, but I just want a little more highway pulling power for my trailer. Do you guys think it will be a noticible difference, or am I wasting my money? If you did buy this set up (Or something close) are you happy? and who has the best prices on the stainless gibson cat back? Thanks in advance!!