Choosing a rear suspension

I'd look at parallel 4 link with a panhard to keep the rear centered along with adjustable shocks on all corners, course the rear would be a coil over shock but This would allow you to fine tune the suspension to not only hook but hook straight. Plus you'll likely save a few pounds over the super stock leaf set up. Not much but a couple. With the power level you're looking at to dip into the 9s, I think you're best bet is the 4 link.