I was just looking at this y pipe after following your link. The application chart shows it fits the early 80's models of the bronco and ranger with a V8. Are you sure this will work on your '01 Ranger? I am looking for exactly the same thing for my '06 4.0L Ranger. However I would prefer a 2.5 inch. I'm also wondering is this Walker y-pipe mendrel bent? If I only install one cat on each side, will sticking to 2.25 inch y-pipe instead of 2.5 inch help keep my back pressure as it should be if I am running high flow cats and a flowmaster muffler? And if I stick to a 2.25 inch y-pipe, should I run a 2.25 inch muffler? I was planning on running a single 2.5 inch flowmaster. Keep us posted, I'm curious what you find out. Here's a link
to the thread about my y-pipe project.