2012 XT 500 Snorkel Kit

Is there anyone on here that can advise what the best way to go about snorkeling the ’12 XT 500’s? Apparently Can Am switched from the 500CC air box in 2011, to the 650CC in 2013. I’m having trouble finding parts listed to fit mine, and I’m not skilled enough to fabricate my own. I have a friend willing to do the work, but I want to make sure it’s done right the first time. I have an XMR on order and would like to have both bikes (if possible) ready to take to Mud Nats.