i know it may seem like you are going backwards but, if you can get the front up on jackstands and let er' rip this would be the best and easiest way to do it. you can replace the bushings one at a time by just taking the bolts out of the k member, but because you have no engine in it, i would just take it all apart and replace the bushing as you go. you can unbolt the torsion bar crossmember and lower it a tad and replace the bushings without removing the torsion bars if you wanted to. does this have an 8 1/4 ?