Just a quick walk around of my 1982 K20 Chevy Pickup. Been a year and a half since my Dad and I installed the new 6.5 heads and all is well. No problems, hiccups, leaks nothing but perfection every time. The truck also has a new fuel injection pump, new injectors, timing chain and sprocket, new brakes, shocks, all new see thru fuel lines, new front wheel bearings, new bigger alternator, new starter, new 1000cca batteries, new K&N air filter, new electric fuel pump and lift pump, new radiator, new brake booster assembly, new ignition, 60g glow plugs and some others. I always run a fuel stabilizer like HOTSHOTS EDT since Ultra Low Sulfur Diesel doesn't do any good to these old truck motors. The truck runs perfectly and never misses a beat. I wouldn't hesitate to drive it anywhere. I get up to 30mpg highway and around 25 city. Those numbers can put any in this same class to shame.