No that was not produced by MP as far as I know. Appears to be an altered picture.

The M1 DP LA had divided square bore flange, centered water neck, and the runners were reversed compared
to the one shown in the picture (that is to say the right side plenum fed into a long runner shared by #2 and #3 which
is the opposite of what is shown).

The M1 DP Magnum was very much the same except magnum fastener layout, and the water neck was offset.