I know of at least two different shops up my way, Crofton area, that can do it that I would trust! To do it right you'll need to space the o2 sensors out and hope you don't pop a code!
:edit: And it would be REALLY nice to have the set-up flanged so you could put a cat back on it when you need to go through emissions!!
Modified by cpchillin at 10:14 PM 11-28-2006