I did it myself and it was a big job. Alot of cutting, measuring and welding. It took me two days to do it - full days. I would bet a shop would hit you with at least 10 hours of labor at the least. Resto/speed shops get $75-$125 an hour around here so...figure they would probably want at least $700 up to $1,200 to do it.

Just a figure...