I used the Calvert/Rancho 9 way rear shocks from mid 11s to mid 9s w/ very good results. Had Lakewood 90/10s up front. All 90/10s aren't created equal! The Calvert 90/10s were too loose and my car would NOT hook at all w/ them.
Once I started using nitrous and went into the 8s, I upgraded to Viking DA shocks.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax