hey i have the four speed version of this box and i thought it was a standard 1200 box

This is the 'direct-in-fifth' dogleg box & it shares the main trans case with some other 56A four speeds. Both first & reverse are in the extention housing which looks to be a gravity casting, while the main case is a pressure die casting.

I switched the rear seal to a 1000 one to make it compatible with my 1000's tailshaft yoke arangement.

These boxes don't have a great reputation for strength behind the larger motors, but they do fit the smaller tunnels in 1000's & a busted gearbox is more a reflection on the drivers ability, than on the box itself. I have used this one for about 15 years. With a nice 'life extending' major overhaul, it should last long enough to become part of my deceased estate.

Respect your Datsun. Treat it well.

P.S. The hose? A vent line that i ran away to a cleaner place than the dusty underside of the car.
The colour? I was not able to find the original Datsun engine blue, so i used some leftover Chrysler engine blue that i had. The trans was looking a bit ordinary, so i painted that too.