much cheaper alternative to OEM Cats / Magnaflow Direct Fit - overall good fit I wasn't sure about the quality of the metal so I painted it with header paint to protect it from New England rust. Once you've removed your old one you'll find how difficult it is to put the bolts in - there's VERY little space between the minicats. I ended up using a swivel socket [not an adapter] and a punch to put it in place. I can't think of any other method that is very successful. I also replaced those stupid clips at the top of the manifold with nuts. Yes, now I have to hold onto the wrench while I put it in, but at least I know it won't rust or break when I take it off. It was pretty easy to ask a friend to hold the wrench up. and hit the bolt from below. Remember to bring the crampons to the flange slowly or you could get a leak. Will I buy again? Probably. Cheaper than alternatives, but not as cheap as simply removing all cats. My 03 TJ will soon be emission-free.