Longer torsion bar bolt?

Does anyone know if you can put longer torsion bar bolts in an A body LCA. The one on my driver side is screwed in Flush with the LCA. The one on the passenger side still has about 1/2" left to screw in. I am trying to get another 1/2" to 1" of lift on the front end of my 67 barracuda. I just went from stock wheels and tires to 15×7s with 225s and I'm trying to get some more clearance.