78K5 350 TH350 with I believe the 208 Full time 4x4 transfer case. I have a 4" lift and 35 mud terrains. I have 342 Gears and as you can imagine, Its a dog on the road and in the wind. Does great in the mud and the trails, never had it on the rocks nor do I plan on it. Is it cheaper to upgrade to used 3/4 or 1 ton axle's with a better ratio or should I just upgrade what I have to 4:11's? I've checked on the gear swap and for both its around $1500-$1800 from the shops i've found in the DFW area. I know used axle's can be a risk but what should I look for ? Thanks for any advise.