Thank you Ryan, Richard, Kevin and the crew at Reef Photo.
After 9 months Uncle Subal came through, enclosed are pics.
I had the housing converted to port V3 from V4 since all my lens and ports are V3 compatible.
The port lock as a result is absent, but there are places where fittings can go. It would appear that a V3 lock can be added.
There is no iso lever (unlike the D4), just a button which is easier to get to than my ND2.
Otherwise the housing appears to have all the bells and whistles
Looking forward to playing with my new toy,
Elmer