It is in fact on the canyon chassis. We ran into the GM guys two years ago on the rubicon with the fake skins and asked them if that was the H3 and they said no it was the canyon. We late got them to admit it was H3 because Don Hall was with them on the test.
Curtis McNeil and Charlie Copsey are co-owners of Just 4 Fun in Lindon.They are great guys and do a lot of good work. PM me if you need their phone number.
I agree, we went yesterday and had a great time. One of the guys that went with us rolled on the last obstacle. A fun time, get hooked up with someone who has access.