My 64 has PST 1.03 bars, 6 leaf Espo springs, Bilsteins, boxed lower control arms, factory upper arms with Moog offset bushings to get some caster, subframe connectors, torque boxes front and rear, factory front sway bar and BFG 245/60R15 rear with 205/60R15 front. It is night and day different from the way it was. Handles pretty well for street and highway cruising but It would need stiffer torsion bars, heavy sway bars and lower profile performance tires to be anywhere close to a handling machine or come anywhere close to the corner carving of my WRX.
