Replacing the strut bearing is a pretty unusual repair. I bet you won't have to do it. I have no idea how you'd go about realigning the one on my 32, to say nothing about finding a replacement. The mount does not seem to be adjustable, although it's way in the back of the engine and fuel tank so perhaps I'm missing something. I think it just through-bolts through the hull.
But replacing a Cutless bearing (note, from the useless factoid archive that is my brain, Cutless is a now-generic brand name for this type of bearing, technically it isn't spelled cutlass) is, in the grand scheme of things, a fairly simple repair ONCE YOU HAVE THE SHAFT OUT. Good luck with that. It can be very difficult to separate the shaft from the engine coupling, and on some boats you have to take the rudder off to get enough clearance to pull the shaft clear. (In my experience getting a coupling off the shaft with the engine installed and without ruining anything is the most difficult thing I've done on a boat--so far--but my boat has a V-drive and the shaft passes underneath the engine, so YMMV.)
Once you're deshafted you do not want to pound out the Cutless bearing. That WILL mess up the strut. You can either press out the old bearing using a really big C clamp and a series of sockets to use as spacers, or you can cut it out by taking apart a hacksaw, reassembling it with the blade passing through the old bearing, and carefully cutting through the old bearing without hitting the strut. This might take two cuts but after you've carved a slot in the bearing it won't have a chance against the C clamp press.
Once it's out, put antiseize compound on the inside of the strut and the outside of the new bearing, and press it in with the C clamp.
I don't actually think the antiseize compound will do a thing after the many years that the Cutless bearing should last but it will make you feel like you're adding value after all the effort of taking everything else apart.