1972 360 Balancer with 1967 273 Timing Cover

The balancer is thicker, but I thought the face where the pulleys bolt on was in the same relative position? The pulley fit inside of the balance ring. I could be wrong, or just senile... but I know I've done this before, a time or two.
A better shot of the crank pulley on the balancer, definitely recessed.

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