Weld in subframe connectors (2X3" cross section)

8 point cage (mild steel, TIG welded)

0.95" torsion bars (I think that's the diameter)

SS springs

Aftermarket sway bar (forgot diameter but it's fat)

AR Engineering Viper brake conversion (using 11-3/4" Cordoba discs)

Edit:

This is my 69 Charger (original 318 column shift car)