you would need to cut them to get them to spice in. As long as the diameters of the inlet and outlet are the same it should bolt in. That said I had them on my old v8 and the clamps always came loose so I had them welded in.
Also, Depending on how far downstream you put them you could throw a MIL. Most likely you will also need a set of 02 sensor extenders as well and may need to splice some wires together to make them work. A while back there were no 02 extension wires that were plug and play but they might be available now. If they are available then you should just be able to plug and play.