output shaft bearing

Anybody know the part # for the rear Output Shaft Bearing for a 66-71 904 ? All I can find is #s for the much later 80s version TF6 . I am changing the rear seal on my 904 and got this wild hair up my backside about pulling the tailpiece off to do it on the bench without removing the trans from the car and figured I might as well swap this bearing while I'm at it .