Direct bolt in, non carb compliant ( generally ok for non call cars) #54752 $250+ tax/s&h, carb compliant weld in #82618 (Cali ok) $195+tax/s&h,#93253 weld in non carb compliant $95+tax/s&h
This is from NAPA, and all their stuff is Walker or Bosal, I listed Walker #s. Good luck. Most good shops should not charge over 1-2hr labor plus gaskets. Honestly direct bolt in would be my choice, ie better fit. And you can bolt in your self if you can remove bolts/O2 sensor.