Obviously NASCAR is letting Jr use a little of that special sauce they dole out once in a while when they desperately want someone to win. I'd love to see his motor on a dyno next to the other Chevys. It will be fruitless however. The Toyota contingent now has a killer combination, with equal aero via the COT and superior power, plus three super drivers at JGR.
I'm sure Jr will make an effort to work with his new teammates, but when the white flag flies, look for the 88 and 20 to hook up.