If you're concerned with costs... you can still make use of the factory parts and do it for about $20. Those traction bars are to prevent axle wind up. But... Mopar was ahead of Ford and Chevy in that the leaf springs themselves are biased becaused they are designed to do the same thing. They work in conjunction with a part on the top of the axle that's called a pinion subber. The snubber is supposed to hit the floor and stop axle wind up. You already have the parts you need. By a control arm rebound bumper, or the replacement front bushings for the traction bars, drill a hole in the factory snubber (It unbolts from the car...) and drill a hole to bolt on the taller bushing. You can also drill the snubber mounting holes a little bigger, and make some U shaped spacers to raise the bushing further. You want it to be about 1/2" below the floorpan when the car is sitting on it's tires with a full tank of gas and you sitting in it. It's that simple. No buying the bars, no loss of Mopar integrity.