These guys are great, saved me time, and money. A while back I installed a very expensive header and full exhaust for my car. Unfortunately, my primary O2 sensor rusted and got stuck in the downtube. I was instructed by another shop that they would most likely have to strip the threads out, seal it, drill a new hole, and replace the sensor. Not what I wanted to hear especially after the price I paid originally for my exhaust. Instead of taking the easy way out and messing up my header, these gentlemen took the time and carefully extracted the old sensor without messing up the threading. Then installed my new O2 sensor and got everything back to perfect. My exhaust shop back home would have cost me double what these guys run. Thanks again.