I took my 401 in to an automotive exhaust shop in Missoula Montana. He was able to bend a pipe which replaces the catalytic converter and the first muffler which is normally located in the, what should we call it… “The A-hole of the swingarm”???
So, we utilized the stock header with the sensor and sensor mount. the technician bent the pipe to go between the stock header and the aftermarket Akropovic exhaust.
He did it for a little over $200. I think it looks really good. Maybe with a little road wear, it will develop a patina to help them blend in with the original pipe. But who cares it looks pretty good!