It was 'experimental' until the Dec. 2015 update. Now MS3 officially supports SR, RB and VG trigger wheels for CAS timing (wheels with four different length slots). E16 wheel looks like the KA and 280ZX wheels, so unknown if MS3 works with the CAS portion of these wheels (3 small slots, 1 large slot)

The old MS2 supports Nissan CAS for ignition spark timing maps and coil trigger but does not support the cam position ring.

In any case it is not needed for the A14E or A15E engine, which uses the standard points-type distributor. MegaSquirt can also use the points as an input (no CAS required)