On an 05 Ralliart, does the stock Exhaust Manifold have an attached Cat like on older lancers? My 03 Oz rally had one like this. The header currently installed doesn't have an attached cat so I suspect it might be aftermarket. I, unfortunately, bought my Ralliart "As is" and it's been quite a challenge figuring out what has and hasn't been modified or changed. I bought it from a sleazy used car lot who knew nothing about it, and the original owner is lost to time.