Where are you located. I have a 2009 Birel R31 that would make a good Briggs chassis. I am waiting on a Briggs animal I was going to put on. I’m not sure if you can run the animal with the 206. I think they are the same except the 206 is sealed. I’m not sure. I’m selling the roller chassis with new brake pads and extra set of wheels as a roller for $1200. Bolt on and engine and a seat is all you need. Shipping is around $200 to the Midwest, not sure about west coast if you are out there.