Check out planetisuzoo for isuzu for info,lots of folks mod and wheel them not much aftermarket support tho
Lift is easy and cheap on 98+ D44 rear,4wh disc,auto trans isan issue 4l30E sucks 5spd is the way to go.
4:10 and 4:30 from factory on v6 models 4:10 auto/4:30 5spd
4:77 with crappy(IMO)...