Roush Anyone Install an O/R X-Pipe on thier '05/'06 Saleen?

I miss that sound, so it's time to put an Offroad X-Pipe on and was wondering if anyone has done so yet?
Also, has anyone had any experience with the Summit Racing or Jegs X or H-Pipes? Is that stuff made in the USA? I ask because there is a substantial price difference between their stuff and everyone elses.

Thanks for the input!