I will have up for sale soon some headers off a mustang with maybe 70-80 miles on the o2 sensors included for around 200 or so shipped. I had them on my 90 SC for a season, so they are already modified to fit on the tbirds.
Will they bolt up to the stock exhaust? Are you changing just the headers, or the whole exhaust? (I'm looking for that too.) What are you asking for them?