Yup, you can convert a manual to an auto, have you still got the auto engine lying around???
If so, pack the spigot bearing with grease and find a socket that will fit inside the hole, then tap the socket, it 'should' force out the bearing...
My Essex was a manual, it's now an auto, I think I got the spigot from the Capri Clinic, or somewhere similar, they normally take them out and 'loose' them, so you may get lucky...
Gimme a shout if you need anymore help...
Guy