Are 833 and 904 yokes the same?

In my experience;which is limited
the 318/slanty short-tail boxes have the small mainshafts, and so use the 904 yokes.
the 340 and bigger applications have the larger mainshafts, as do all long-tails, and so use the 727 yokes.

Passon Performance supplied me with a large-yoke mainshaft for my 367HO. There may be other suppliers. With a 360 hi-torque engine, I was afraid that small shaft wouldn't take it.I am not that kind to my junk,lol.