Local speed shop for one of my setups then when I checked with my local general parts store when I changed it again and got them through them. Make sure they are stainless steel so they can form to the pipe when you bolt them down. Get them tight and start the truck and let the pipes warm up and retighten. The headers you got look coated which will still be cool but the clamp on the ORY pipe will be hot as hell so have the clamps in a spot you can access. Give that PN I listed above to your local parts stores and see where it gets you.