My 54 I have taken with a 51 rear axle 411 gears 310 miles one way took about 6 hours .if your truck is a 1/2 ton it should be able to go the speed limit .I was going 55 miles per hour and had to move over to the left to let traffic by when someone comes up from behind .As long as the truck is maintained and you have went over everything it should be dependable , and if anything does go wrong you have a better chance of fixing on the road than a new vehicle.
