Ditto on that one. The torsion bars are really simple. Just measure the space in the wheelwell before you jack it up, jack it up, and crank them evenly on both sides (count the turns). Then put it on the ground and measure again.
The shackles are easy also, just 4 bolts. For both ends, you'll need a breaker bar, or an easier way is to have a length of pipe to fit over you ratchet to get some extra torque on the bolts. My suggestion is to do the shackles first then even the front end to match.