Unbolt the trans and try to slide it back. Make sure a strap or something is supporting it.
Undo cooling system. I would remove rad as well just to protect it.
Undo all wiring and hoses.
If you have a engine hoist great, but if you don't rig something up to pit with a comealong or something like that. I was able to lift mine straight up and out. Most people have a equalizer set up on the hoist so they can tip it to clear things.
The radiator is out, Carburator Is removed. One of the exhaust manifold pipes rubs on the stearing gear box (is actually compressed so it could go by the steering gear box), so that has been putting excess heat on that for years. It might be easier to remove the exhaust than to work sepperating the flange? I can drop the transmission using my floor jack.