You will need to remove the shifter and rods before can remove the trans, probly the mounting plate as well. If all this is out, very least is surface flywheel as mentioned, and new clutch disc, and throw out bearing. This is not a job you want to do often. They make plastic plugs for tail shaft for 5-6 bucks at swap meet tool guy. Remove drive shaft and be ready with that plug. It will drip out and gear lube is dirty, smelly, nasty, and doesn’t come out of clothes easy. Have a drain pan ready in case. Remove trans, 4 bolts. And back it out. Very heavy and awkward, have help. When removing bell housing may need to let engine drop a little in back to reach top bolts. (Have floor Jack under oil pan with a board to help spread weight) then remove pressure plate clutch and flywheel. Flywheel bolts are different from just about every other bolt, don’t lose them. Use lock tite when reinstalling flywheel. Ps flywheel heavy also, be ready to control it as comes off crank. When reinstalling flywheel pressure plate etc, CLEAN them, no greasy fingerprints. That will trash your set up quickly and you will get to do it again. Brake cleaner works here. Sure there will be plenty more advice from other folks for you as well. Practice a few swear word as well. You will use them.