i want a new exhaust, but im not sure what to get i kinda like the slp loudmouth but i like the flowmaster 40 also and what is the differance between straight pipes and the x/h mid pipes?

Well, the H pipe or X pipe allows for flow from 1 pipe to the other where as straight pipes are what they are, stright out. The straight pipes are going to be pretty loud but are raspy in my opinion. I think you would get a great sound out of the 40's with the stock H pipe and just cut out the silencers, if your year has them.

An o/r h to the flowmaster 40s would sound great.