you would think they would fit right out of the box, but you will have to mess with the little clips or whatever you call them that hold the manifolds on. I actually had to use a hacksaw and cut a couple of them to fit. It wasn't horrible but it took a good long time, and if I remember right the linkage got hung up and I had to bend up a new one. (I could be wrong on that though) It isn't all as easy as you are hoping. Not to mention the entire exhaust system that has to be built. (at least the one pipe, some setups are made to use the original, and you only need to add the extra.)