Who can tell me what this weird part sitting on my desk does?

I need to model this so we can recreate it, and figured its function/application would make a fun guessing game. 

Hints:

1. It's for a Classic Motorsports project. 
2. It's not listed in any parts catalog, new or old.

Can anybody tell me what I'm looking at?

In reply to Tom Suddard :

Input shaft housing for the Datsun 1200 transmission going into the Sprite?

Output shaft or Tailshaft housing/cap?

Full floating outer axle hub.

Oh, I forget what that is called, but that is what you put the Johnson Rod in.

Transaxle output shaft bearing carrier to accept inboard drum brakes?

Turbo encabulator? It encables the frange-pump and allows for rotissional motion of the cribble.

Edit: autocorrect did not like that.

RoddyMac17 said:

Transaxle output shaft bearing carrier to accept inboard drum brakes?

Ding ding ding ding! Winner! Wow--that was fast. This part mounts the drum brakes on the Elva's transaxle.

In reply to Pete Gossett (Forum Supporter) :

Nope.........................

Inboard DRUM brakes?
 

Ok, why not.