How to identify a non lockup A999 transmission with pics!

So I pulled out the transmission that was in my Duster. (not fun without a lift, but that's a story for another day)

I had thought that it was in fact a genuine 999 but it turns out it isn't. The PK # is 3681843 which makes it a standard duty 904 from a '74 m.y. car equipped with a 318. It's one digit off, a 999 would have been 3681844. I was bummed! Oh well.

When I bought the car, the previous owner did say that it had the low gear set and 5 clutch drum in it so this may be one of those instances where it has to be taken apart to verify what's actually inside. I'm skeptical, it's probably just a regular 904 but maybe I'll get lucky. It worked OK in any event.

The main reason I pulled the unit out though was because it is really grubby, like 41 years of grime and old fluid. One of the rear freeze plugs in the 340 was leaking pretty bad. I think there is more oil inside the bell than in the unit itself.

Frankly, I really disliked working around the trans while it was in the car. It seemed like every time I came in contact with it I became covered with dirt and oil. I figured since the engine was out, it might be a good time to pull the thing and at least clean the case and maybe put some new seals in just to keep it clean. Glad I verified what was inside the other one, at least I know I have one definite 999 gear train I can use.

So now that I know what I am working with, I have been looking into a 'race prepped' case from A+A. Seems like a good thing to do. Nice and clean! I like the converter bolt access hole too.