Balancer slides in on install

Would anybody happen to know the factory spec for the snout diameter on a cast 360 crank? That might be easier then trying to wait on finding a used balancer to check, since I can get the balancer off after work tonight to measure mine
New Scat crank 1.5319
used 360 1.5312
used 318 1.5312
used poly 1.5308
some for a comparison