Look in Summit or Jegs, should be able to find a O/R H pipe for $120-$130. I prefer the H cuz it gives the flows the deep rumble tone. And its loud enough. Shouldnt take any longer than the cat back install. Just get a can of PB Blaster to soak the exhaust manifold bolts and disconnect yer battery. Remember also you need a Diablosport Predator or X-Cal to turn off the rear O2's. Or pick up a pair of MIL Eliminators with the H pipe. If you dont the Service Engine Soon light will come on. Also the power difference between a H and X is less than 5HP so its more of a sound preference. More deep with H or powerful race sound with X. You can hear some sounds here... http://www.mustangexhaust.com/forums/soundclips.php?catid=14