Review on KYB KG4012 Gas A Just Gas Shock by Michael Gutierrez

I bought these for the back of my 1986 Toyota pickup (22R engine, half ton, standard bed, 2wd) and they have been working great since September 2012. From I haul heavy loads from time to time, so I need something more productive than the standard. I used to have regular blue Monroe rear shock absorbers but after 3 years they broke. I'm guessing it was the 1200 pounds of construction debris I lug around sometimes.