You'll have better luck with the smaller shops, shops that arn't tied to the same rules that bigger shops are. The Megan ones have a Megan badge tack welded on to them. If you dont do
this(click here) you will get a CEL. Using the non-fouler, you can get around the CEL. My Megan was just over $50 shipped. I suggest soaking the old bolts in PB Blaster to help aid in getting them off. Also, use some anti-sieze on the new bolts as well as the o2 sensor to make it easier to remove if you ever have to. Good luck!!!