The balancer won't work, mine is internally balanced and I put a new balancer on it when I put it back together. The crank pulley looks the same as what I already have, if you take a measurement from the end of the snout to the back side of the first (rear) groove I bet it's around 1 1/8". It measures 3 3/4" overall depth flat on a table with a straight edge across the snout.
