I drove my 64 f100 with a 223 eng, 4:10 gears and t-98 4 spd trans. from Kalispell MT to Tacoma WA. this June. It was 521 miles and with the 4:10 gears I only went 50mph which made this an easy 2 day trip. The truck performed flawlessly. The worst part was the am radio. In Montana, Idaho and Eastern Washington the only stations are right wing talk and spanish stations. I need a cd player!!!!!!!!!!! Good luck on your journey I think the truck will do just fine as long as you keep the rpm's down