If this is to remain a slant 6 street car, a lot of your list is overkill IMO. I'd keep it mostly stock with a few exceptions. I'd for sure add a front sway bar and up the torsion bar diameter, although maybe not quite that much. Good set of shocks......sure, but tubular control arms, welding the lowers, adjustable strut rods......no. Same goes with the frame connectors, not needed on a slant 6 street car. Stock 6 leaf rear springs and maybe a small diameter rear bar and call it a day.