I initially installed some springs from my local parts dealer. Supposed to be stock replacement. Wrong! The ride height was 2" taller and the ride was extremely harsh. I then ordered the Eaton Detroit 4 leaf HD springs. Perfect factory height and the ride is much improved. I just got done running the Big Bend Open Road Race and handling was fantastic. On the trip down with the trunk full and a full tank, there was no sag at all.
Also I ordered the spring through Year One. They were cheaper than ordering direct.
