Gracious……this transmission is going to be the death of me, LOL!! I have tried to drift out the reunions as outlined previously. However, the u-joint is actually slightly recessed inside the tail of the transmission. So, when I try to drift out the trunnion cap, it meets with the lip of the transmission tail and will not clear. I spent 6 hours trying to remove it today.
It doesn't appear that you have the compatible transmission bell for that type of u-joint. I marked up the pic that Dan posted to highlight the recess where the trunnion bearings have to go into. It's apparent that someone installed the engine/transmission as an assembly with the u-joint fully assembled and slid the rear yoke of the u-joint on the propeller shaft. Either that or they moved the axle back enough to clear the u-joint. There's a bolt holding the forward yoke of the u-joint on the output shaft of the transmission, which is accessed through the center of the u-joint.
I think the only way you'll get that out is to move the axle assembly back so it clears the u-joint. Sometimes you just have to bite the bullet and do what's needed.
