I don't remember specifics anymore, it depends on "gearing." Some boxes you need to drop the cluster down in the box to give clearance. It's been so long since I've been into an 833 I have no idea what is involved if the shaft is actually "welded." If it gets to that you might want to try and "break" it in there IE support the thing and give it one hell of a whack on the tail shaft. You might--if you drop the cluster and pull the front bearing outer ring---might be able to pull everyting out the back, I don't know
