What size wheel/tire are on it? You could try cranking up the torsion bar adjustment a bit- or try a bit smaller diameter tire; depending on how and where the tire is rubbing. The Hooker Super Comps are notorious for limited tire/wheel clearance. Your torsion bars are probably okay, but keep in mind that the hot setup at that time was to run soft slant six torsion bars and "worn out" or loose 90/10 drag shocks, with no front sway bar; this kept the front end "loose" and allowed the front to rise easily, aiding in weight transfer off the line...