Will new torsion bars correct that POS, bucket-o-bolts feel I have?

When I broke a rear air shock on a recently purchased 65' Barracuda Folks on here talked me into spending the $$$ on a QUALITY replacement shock and I went with the Bilstein's on all 4 corners and WoW what a difference they made and this is with a completely worn out suspension system that has yet to be upgraded.
Money well spent !!!