According to the Skyjacker instructions I have, "on coil spring part #D50 (for 1/2 tons and 3/4 tons without V10 or Cummins Diesel engines), the coil springs are labeled driver and passenger sideand must be installed on appropiate side. On coil spring part #D45 (for V10 and Cummins Diesel engines) there are not specific driver side and passenger side coil springs. "
I printed these from Skyjackers web site (Page 6, #17)