mine turns out to be great, i just need the bolt on brace, crossover adds more stress to the steering frame. already have the bolt on brace. just havent installed it yet. your stock knuckle on the D60 will be good, 95 percent of the time i seen the knuckle break is from hard core wheeling, But if ur 77 is gonna be a tow rig, light trail rig, u will be fine. i am getting a hydro assist too if i keep the truck. hydro relieves the stress on the steering frame area too. which is why theres alot of full time off road truck gets full hydro, when street legal is assist.