Update:
15 year old Daughter has been driving wheels off "Muddie Buddie" for while now. No accidents

Although almost drowned the Jeep backing boat into duck pond.
It's been stuck several times and she knows all about safe winching.
Couple of her friends want me to build them a Jeep and the boys (increasingly showing up) are wanting to drive it, but she won't let them.
TH400 Transmission was fully rebuilt with high quality internals, and I installed a Lokar shifter.
New exhaust system and last night we put on new master cylinder.
No other mechanical problems and A/C is 100% leak free and freezes you out.
Broke factory lockout, but I consider that a fuse.
Front YJ springs have sagged due to extra weight of AMC 360, heavy Odyssey battery, A/C system, Jambo mount 8274 Warn, Tuffy under hood tool box, battery charger, air compressor, and the folding tow bar with bumper reinforcement.
33" Gateway Buckshots are now getting worn. Gateway reintroduced the Buckshots but only offer 31" on 15" wheels.
So looking at new springs, probably RE 4.5 heavy rate and 34x10.5x15" Interco Boggers.
Beaters are neater and having good time with this Jeep.