Carrying weight off road and dragging it behind you are two totally different. Our triaxle has an 8LL with 4.56s on 11r24.5, 65-70ish mph is about 1750, the tractor with 4.33s does the same but that’s got a wonderful 15 speed in it. if you are doing little to no highway driving 4.33s and a rtlo 18 are the way to go. Edit: just noticed old thread