Good product. But be careful if your box contains nuts. Whatever you do, DO NOT use them. I see some other reviews online that some of them contain nuts and some don't. Do yourself a favor, go to a parts store and get the correct grade A nuts. The ones I got in the box with the spacer tube on end up wearing out the bolts when I tighten them. I've been using exhaust systems for 15 years. Please follow my instructions. Why would Dynomax weld the bolts? That's a stupid idea!