I think you answered your question. go with flows 40 duals with an off road h pipe lol. get some big tips and your done. i like the 44s with an x pipe but thats just my 2cents :bigthumbsup

love the sound but its really up to you and what sound you like. if you want a deep tone sound stick with the H and 40s. The X pipe gives it a different tone to it. check it on you tube. i just love the sound of an X pipe and also the 44s are louder than the 40s.