u/EntertainmentSea4048

I’m using my 2005 Yukon XL 1500 to tow my 1969 Land Rover 88 (about 3000lbs) 700mi using the U-Haul auto transport. Should be 5300lbs or so in total. Has a new class V hitch, fluids/maintenance are always done on time and topped up. New brakes all around. 4.10 rear RWD with a factory transmission cooler. New tires going on this Monday.

Has an Arnott suspension conversion which removes the old blown shocks that have helper bags, worried how this would affect squat and towing dynamics

Has 200,000 mi. I figure if I use tow/haul and keep it 65-70mph I should be okay and not grenade the old 4L60E.

Any tips to prepare the vehicle, and tips for driving? Might go through some mountainous roads in PA on the way to the east coast.