They certainly look like the basic Stage VI w/ the RB intake spacers. The Crane rockers are standard-offset, and it's a standard M1 intake in the pics, so that should rule out being a MW version.

Stage VI seat inserts are borderline wide enough for even a 2.19" valve; can't see a 2.25" fitting w/o replacing the inserts. Even then, those ports aren't likely going to benefit from a valve that size as small as they are.