Big Block Suspension Question

On a scale of "almost useless" to "absolutely necessary", where does changing the torsion bar suspension to a coil over conversion lie?

not needed.. if mostly street driven just put larger torsion bars (1"+) and a sway bar along with a quality shock and be done with it..

that being said. an alter-k-tion is awesome up front.. nothing feels like that r&p steering and man the room under there for headers is second to none..