What are the outside dimensions of an individual cat in a stock dual cat set-up. I am going to get two universal 2 1/2 inch cats to make my own dual cat y-pipe, and i want it to fit as well as and look like the factory set-up, but i need a width dimension, the length is not too critical cause i have an inch or two to spare. By the way, i did not take that pic, otherwise i would have just measured it myself.

 

Anyone have the stock set-up that is willing to take a tape measure to them?

 

I can't go out and measure them, because I don't have them. However, they are the same size (roughly) as your typical 2-1/2" high flow universal cat.

 

Ok, just wondering if i was limited to a certain size, i will just get the narrower ones, i think catco makes two versions one is one inch narrower than the other, both should flow the same, right? Or would the one with the larger body flow better? That is the reason i ask, otherwise i would just get the smaller of the two sizes.