Front end upgrades 74 dart 225 slant 6
So the first step is a complete rebuild of whats there now. That is, upper and lower control arm bushings, upper and lower ball joints, inner and outer tie rod ends, pitman arm, idler arm, strut rod bushings, rear spring bushings and shocks. First upgrade would be high quality shocks. Next would be a front sway bar. Then larger torsion bard and HD rear springs.
Actually the first upgrade along with the shocks would be wheels and tires.
If your front end is still original, you'll be pleasantly surprised with the results of a good rebuild.