.... i got a Right Price exhuasts $150 fitted special. Just the muffler, gave me an extra few KW, (enuf to offset me lard arse maybe...), and the stock muffler is restrictive, so revs better in the top end of the rev range.

Actually sounds good, not too loud, not raspy or restrictive, considering the small $$$ spent. not REALLY sure how much performance you'll actually gain from the cat back, the stock system is mandrel bent, and not too bad all things considered. if you make the pipes too much bigger, you'll lose some bottom end power to for the extra bit of top end...

not sure what my engine builder will use to the exhaust when i give it to him to turbo, but he tends to use CES gear, and the guy there, (can't for the life of me remember his name... it's been a while), does an awesome job.