early 727 tailshaft bearing..

So.. i asked over on the b-body forum but that place is a ghosttown, thought i would ask here.. The early 727s (bolt on flange) have the tailshaft bearing right at the very back of the housing unlike later ones that have it in the middle. I am hoping someone might know the part # for a replacement? I don't wanna hammer mine out to look for a part # on it in case i hurt it can't find one...

P.S. i really need to collect some spare early trans just for parts :)