PlaneDev:

They are only in a few points, the main one being the armor ring to protect the turret 'neck', and the 'new' attachment vent-cap for the MF Henschel, where the Basic Porsche used two vent covers to hide the bolts. Oh, and the early deck has no mounts for the new turret traverse motor, but as pcomm used the old 56004 traverse unit (part 53400) that was something that was not relevant.

If you glue the armor ring down on the deck, you'll never get a Henschel turret back on without serious work, and the vents are too big to be worn when the Henschel turret is in place, as the turret bustle would catch on them.

That help?