Who sells a full exhaust for new Grizz and Kodiak 700?

Who sells full exhaust systems for the new Grizz and Kodiak 700?

From what I have read the cat converter is in the OEM header and is the source of the massive amount of heat on the left rear fender. So I am looking for info on a full exhaust system to eliminate the heat issue. I realize a tuner will be required as well.