Somewhere, somehow the hardware to hold the Y-pipe to the factory manifolds grew feet and walked off. Fortunately, Summit Racing stocks factory-spec parts. We wanted to stick with the factory manifolds for the time being in hopes that we will get through our first smog check easier. However, the factory manifolds have small 2-inch outlets which Summit didn’t have flanges for. We sourced some locally and welded them to 2-inch to 21⁄2-inch Walker reducers from Summit.