I applaud your optimism! But don’t share it, unfortunately.
You’d need more backspace than that with a stock width rear axle, but you’re shortening it right?
Another option in the front is the 2” drop spindles that are available. They add bump steer, but, would allow you to keep your lighter torsion bars which would be better for the strip.
I didn’t want to compromise on the bump steer because I was building a handling ride and needed the larger torsion bars anyway. But if your focus is more strip than street, the 2” drop spindles are probably a better compromise for you. I’ve run them on an E-body, the bump steer is enough to notice when driving it hard on rougher roads. But it’s not enough to be dangerous IMO, and with easier driving it isn’t really noticeable.