CE 3 way rear drag shocks

I ran those shocks all around for years on a 9 second Duster that weighed 3350 at the line with 002/003 leafs, not minitubbed, 28 by 10 QTP tires on the back
Car went 1.34 60 foot, and was ultra consistent and hooked anywhere. Anybody who knows that car knows how consistent it was
I had the left rear shock on the loosest setting, right rear on the stiffest( car initially wanted to pull the left rear tire off the track on launch) fronts on 90/10.
Never had a need to replace them, they worked perfectly.