I'm needing a bit of guidance. First off my wagon if basically a Franken car. I am happy with the drivetrain for now and and the interior and appearance fixes/upgrades are in progress, but I need some suspension help. from what I can tell the front end is factory, but the rear is not. The control arms have been boxed by what look to be a person who had never welded before, there are air shocks installed, the springs don't look like wagon springs I've seen before and there is a sway bar bolted to the lower control arms. I am in the process of swapping out the steering shaft, but what should be my next steps in improving handling