I have the 4.0 inline 6cyl which seems to run great with the 32s but i hear if i go to 35s i will probably lose 5th gear? Would it be smarter to just go to 33's (or 34s if they even make those)?Your D44's should be fine, maybe go cromo axles when possible. I'm assuming you have a 4.0, if that's correct your 3.73's will not be ideal, but definitely okay for turning 35's, if you have a 4 banger you'll need to regear. Rear disc's would be great, but the stock brakes are doable. I ran with stock brakes while I was building my 8.8 and they stopped the 35's okay. Besides making sure you have room, steering is one area you'll need to address at some point. I'm running a RuffStuff 1 ton Y link steering, it's s big improvement.