Ladder bar w/floater or Caltracs

My wife & I race a 71 Demon w/a 440 & torqueflite with a 4.30 geared 8 & 3/4. It now has S/S springs, pinion snubber, 2 in lowering blocks for stance & 29x12x15 Hoosiers. I have been trying to decide which way to go for traction & better 60ft, ladder bars with floater or Caltracs with split mono springs.
My wife is the driver,(better rt, & she is substancially lighter). The car has 640 hp, 570 tq & now runs 10.20s @ 131+ with occassional tire spin. I would like 0 tire spin at all. Car is all steel except hood, 12 point cage, frame connectors & all the above. car weighs 3487 w/o driver.