Tub
The hard part is getting it off. I have done two, you need to get organized by having a place to put
hard top, hood, windshield, doors, fenders, seats, rollbar, gas tank ect....
have to disconect fuel lines, heater lines, wiring harness, speedo cable, e-brake cable ect....
I use boxes and ziplock bags to label and organize pieces and fasteners.
I also dedicate a note pad for diagraming wiring connections, brake/gas/clutch connections ect...
Then you have to break loose rusted body mounts! If you break them off be prepared....
By far the best way to get them loose is to start soaking them with a good penetrating oil... do a search for recomendations. Use an impact gun to remove them... using a ratchet on frozen bolts you will torque
them in half....ask me how I know. the quick, short blows of an impact breaks the rust bond without over streching the metal of the bolt.
If they won't come out with the impact... apply heat.. a pencil torch works best for getting into tight areas.
Heat the nut portion of the body mount... metal expands, rust bond loosens.... expect lots of smoke and some flame... they after all are rubber, soaked in penetrating oil.
the two holding the rear of the tub are the hardest to get at especially with an impact gun... on the one I'm working on now I actually cut a hole in the bottom of the rear crossmember big enough for a 14mm socket to be able to get a straight shot at them. I used a plasme cutter but next time will simply use a hole saw. Hard to use a plasme upside down .... I plan on welding in a short piece (1/4") of tube large enough to get a socket on the mount for future access and to gusset/ clean up the hole and then box in part of the crossmember for strength.
long story short, if you can get it off putting it back is easy. nothing technical, just takes time.