Stan's Headers 4" turbo back
Niki,
I am running the complete 4" turbo back system from Stan's Headers. It was easy to install. It uses all stock hangers EXCEPT for the tailpipe end. Reason is that there were several variations of its locale even on the same year so... Stan includes a hanger that you just need to weld on. It uses a Donaldson straight through muffler which, according to Stan, outflowed a straight pipe on the flowmeter. I tell you, it's huge and I like it. Good throttle response and EGT's dropped somewhat. The turbo whine got louder too. Nice part is that the downpipe is already to bolt in, providing you're running a 16-21cm exhaust housing. Rip leaves his downpipes unfinished because of the exhaust housing options. You'll also find Stan's Headers exhaust at dieselpro.net and truckperformanceplus.com. These are Stan's nephew and brother, respectively. Hope this sheds some light on your decision making. Have fun bombing and drive safely.
Aloha~