:happy: First, I am not sure if I am posting this in the right area. If not my apologies! After searching long and hard for the whole catalytic converter set up ... 2 cats with Y pipes, and for the proper four O2 sensors which had me in a funk due to the high cost of all parts needed. Interestingly each day calling vendor after vendor, dealer after dealer, and even the original dealership in Canada, I received answers I was looking for. First off, "my so called CANADIAN 2000 Chevy Silverado" which I and everyone thinking that it was made in the Oshawa Chevy Plant in Canada was surprisingly manufactured in Fort Wayne Indiana. This is just one of two plants that Canada get their trucks from. The other one is located in Jacksonville FL. After finding this out, this made it a whole lot easier in finding the parts needed as for some crazy reason I was given the run around that since it was a Canadian truck that the parts were slightly different! ... To make a long story short; I called a dealer for the price on the cat set up to which they said $1121.94 ... next then I called all Napa, and they tried to sell me on something that was universal and still quite high ... next, then I called Oreilly's and they said that they couldn't get the part that it showed it was completely out of stock! When I asked the number to the manufacture the young guy gave me the number. I called the manufacture and they said that they had it in stock and at their distribution centers the gentleman I spoke to there said to me that it sounded like I was getting the royal run around. and suggested that I buy that catalytic converter set up somewhere else that they supply like "Rock Auto" he assured me that I would get the same "Walker" catalytic converter setup for much much less! I thanked him then called Oreilly to speak with the manager. The manager said their price was $737.99 and that when he would have time tomorrow he would call the manufacturer to see why the could not order it. Not only that the manager said it would then be a special order and there would be shipping cost of $120 on top. I thanked him hung up called ROCK AUTO and in a matter of 15 min, I ordered my WALKER catalytic set up and the 4 O2 sensors, found a discount code of 5% and my final total was to the sweet tune of $499.66 I AM ONE HAPPY LADYarty:arty:!!!!! I will NEVER do business with OReilly and many others ever again!!! SuMcD "persistence pays off"