I have Vikings on my cuda and I like them. I'm sure there are better shocks out there, but they sure do cost a LOT more than the Vikings do. I've been pleased w/ mine.
If you make a lot of power, talk w/ them about the valving packages they have. up

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