I have decided to purchase some type of new exhaust but want to keep my expense down to a minimum. I have narrowed my search down to two different systems based on what I read from this site and the intel I read from some of the magazines. My goal is to achieve a little more low end grunt. The choices I have narrowed it down to are the full MRD system for about $400.00 or the FMF megabomb header less slip-on; "will use my stock slip-on in this application" for about $330.00. Which one of these two and why? Thanks for input!