You can get patch panels for the rear quarter wheel well if you don't plan to use flares
https://forum.ih8mud.com/threads/rear-wheel-well-weld-in-panels-for-cut-openings.1246303/
Remove the slave and place the fork so the bearing is not in contact , then make a new mounting braket for the slave to fit this fork position , at the same time make the braket offset so the push rod is more inline
Valley hybrids have split case P-brake from later 40 series
Some 60 series h42 have , kind of a spacer on the back , so it is the same lenght as an h55 , problably to mount the crossmember at the same place for both set up
Some of the choice for 33x10.5 15
Toyo
Yokohama
Bfg
General grabber
Mickey thompson
Super swamper (interco)
Maxxis
Dick cepek
Kenda
This thread have some info
https://forum.ih8mud.com/threads/33x10-50-15-tires-what-all-to-choose-from-in-2019.1174928/