Super Stock Springs and 60' foots

Who's using them? What's you 60's and are you satisfied.

I have a N/A small block 74 Duster, all steel, only a fiberglass front bumper, no snubber, Rancho rear shocks and C/E 90/10s in the front.

Best 60 so far on 275 60 M/T street/drag radials 1.475