[TopJimmy]

You get all new gaskets, nuts and such...but you should reuse only your V-band clamp. You don't want to finish, hear a leak, and redo that job. New V-bands can be a b!tch to clamp/thread from under a car on jack stands, but easy if you can use a lift and buddy's hands too. A needle nose mini vise-grip saved me and held my clamp closed while I hand threaded the bolt.