Technical Banjo rear end

I understand there is a banjo rear end group here on the HAMB. I cant find it. Where do I look?
Here's the situation. This rear end came up cheap on craigslist so I bought it. The owner didn't know anything about it and I know damn little. What have I got here?
The brakes are hydraulic, and the ID of the drums is right at 12 inches. Bolt pattern is 5 bolt on about 6 inches.
The center section looks like a candidate for the Speedway conversion to a universal joint ( 6 spline shaft, 6 bolt mounting)
The shackle mounts are spaced about 47 inches apart. Seems wide, but I don't know.
The shackle mounts are 2 1/4 wide (that seems correct)
Anyone hazard any guesses on a year so I can hunt down some brake cylinders and other parts?

 

Pretty sure that’s a 40-41 banjo rear end. The rear spring perches look like 37-41 to me, and the juice brakes with 5 x 5 1/2” bolt pattern further narrow it down to 40-41. Looks like someone welded some shock mounts to the banjo tubes, and the rear bones have been modified. My two cents. I’ve been wrong before

 

Looks like the shackle boss is broken. And somebody has done something funky to the area where the torquetube mounts the center section. I'd guess this rear has lead a hard life.

 

Ford used 5 on 5 1/2 bolt pattern on their banjo rear ends from 1928 to 1948 so that doesn't help with the year.

 

Not entirely true as they had a few wide five bolt pattern years. The bolt pattern on the original poster’s rear helped me exclude the wide five years from the 37-41 style (which I believe that banjo is).

 

I know 39 had wide 5 with hydraulic brakes.

 

I have an open drive shaft banjo rear end Its yours come and get it. It has spring pads on each axel housing. I'm guessing 49-50 pickup.

 

Wide 5 bolt pattern was 1936-39. The rest were 5.5 bolt circle. Factory open drive was 1942-47 1/2 ton pickup. All banjo rear ends. No banjo rear ends after 1948. Try to avoid off shore after market open drive conversion kits.

 

You're right, I forgot about the wide five, Ford used it from 36 to 39. They went back to the 5 on 5 1/2 in 40. The brake drum shown isn't a wide five pattern. The drum shown below is a 36-39 wide 5 rear brake drum.

 

It's 42-48 rear with homebrew open drive conversion. Don't really matter what year for backingplates etc, for the banjo they only made one I'm aware of. The 37-41 rear is similar, shackle mount on the '42-48 kicks inboard at the end where the earlier stays straightish (the shackle mounts different too, pointing back in to the axle where the later points out away from the axle tube).