anyone know the correct size bearing by any chance?

I brought the bell housing from grand auto wreckers in sa....when i called them, they told me the ca18 bell housing is a straight fit. I said i believed otherwise from reading the forum here.
So they sent me the bell housing with ca20 scrawled on it.....now wondering if they just couldnt be farked and sent me a ca18 bell housing? Was trying to avoid having to do the bearing change as i dont have the tools to do it.
Looks like ill have to find someone locally who can do it :/
feeling annoyed

Usually the ca20 bellhousing had the same bearing size as the stumpy. Its the s13 bellhousing that have a larger bearing and a larger selector shaft

a gap around the bearing will destroy the bearing in a few miles.

There is a bearing swap that needs to be made when fitting a CA front case. See Stumpy

another question.
I got the ca20 bell housing on. around the second smaller bearing there is a gap of a couple mm. does not sit in flush like the l series bell housing. does this matter?

Make sure the senders in the side on the box have been pulled out also. But it should just be the main Centre bolts and the front main shaft bearing circlip

Converting the stumpy box for the ca with ca20 bellhousing.....however, having a little trouble getting the old bell housing off. Its seperated and inch from the gearbox and from what i can tell its just the clip around the main bearing that is securing it now. Would this be correct or have i missed someting else?
Cheers