The B16A* has a 77.4mm stroke, so that's a 38.7mm main center to journal center crank.

The B18C1 and C5 have identical 87.2mm strokes, so that's a 43.6mm C-to-C crank.

Each journal of a B18C* crank is 4.9mm taller the the corresponding section on a B16A* crank.