Depending on what size tires you want to run a 4.5" kit will do you just fine. Its plenty tall enough for 33's with some trimming and most of the time doesnt require an sye with idk if you could even get one for the tcase thats mated to that 2.8(np229,idk?). With a 4.5" kit your minimum requirements on parts to make it road worthy would be 4.5" coils or 2.5" coils with 2" spacers, since its for mud flex wont matter. Id still recommend some 4.5" leaf packs for 3" packs with a 1.5" shackles. Some shocks for a 4.5" kit, sway bar drop brackets or longer sway bar end links for the front(ditch the rear sway bar). Some longer brake lines or brake line drop kits and some yj ebrake cables. Depending on whether you want a floater(33x12.5 or 33x14.0 tire) or a sink and grab(33x10.5), assuming youd want boggers of course. But then you have to look at your axles, even in the mud a d35 wont hold up to a bogger more or less some 31" all terrain's. Id also recommend a new longer trac bar for on-road driveability. If you are wanting a wider tire than a 10.5 you will need a wider rim and more backspacing(so yo dont rub the control arms when your turn) as well. Thats all i can think of for now.