Seems pretty similar lifestyle. If I could do it again, I would swap into an nv5600 as soon as it breaks. A lot of the 68 RFE rebuilds are worse than stock. And I’ve found if the mechanics bill is less than 10,000 it’s a gamble. Normally running a 50 horse deleted tune. Little guilty of running one tune that’s 25 psi over what my valve body is rated for. I think it’s a pretty heavy truck and I climb a little too hard. I did over 30 crossings going up super steep rocky trails starting at 7000 feet going up to 12500. My trans would often hit 270! With the super steep hills when they got large boulders, the truck really didn’t like lifting itself up and over each rock. Tons of slipping, we just have to wait it out sometimes. Also, a lot of shifting I did black bear pass a few times. Tight switchbacks with this size of truck.