1960-69 pair of U pipes, 140 HP cars only: these U pipes have the correct collars that bolt in to your manifold. All right, there it is, for those looking to improve performance with non-stock mufflers, these U pipes will allow you that conversion. comes as a pair, exhaust packing not included. for more details, give us a call at 918-753-2486. We have been using this U pipes for many years in our own rides as well as for customers, we are really satisfied with the performance.