Big Block Suspension Question

I have a 440 in my Duster with PST 1.03 torsion bars combined with a QA1 kmember/suspension. I love them. And if I had coil overs, they’d hit the insides of my front wheels.
So I’d never do a coil over conversion (in the front).

I'm on the fence about doing tubular kmember, but I'm feeling like keeping the kmember stock is the way to go for me. Any big benefit other than weight savings?