60ft is just a portion of the ET. A car that runs high 10's won't 60ft like a car that runs high 8's. It takes power with proper application to get the quickest 60ft. You can have plenty of traction and still have slower than expected 60ft. Ask yourself. Are you 60ft chasing, ET chasing, or bracket racing? All 3 are different set-up's. Then of course there is the variable of surface prep. Again a difference, not just in the tune but the car itself. Don't think your going to go to the local airport no prep with a heads up ET chaser on the same set-up. All this boils down to what you want to accomplish. Some guys will do fine with low buck 9 ways. Stepping up the power means stepping up the support system that goes with it. That means a shock with more adjustment and more than likely stiffer valving. For most of us here a decent double pair will accomplish your goals. Get a usable set (4) shocks with the proper range of adjustment. Now the rest of the car needs to match. correct range of front travel, no bind in the rear, correct instant center location, nose weight, converter, SLR, proper carb cal if foot braking. Then, test,test,test. It's not just bolting on magic shocks.
Doug