lol. I work in automotive suspension R & D here in Michigan. The only reason they use a torsion bar or composite transverse monoleaf in any supercar like the Corvette is for smaller packaging and weight reduction, and they're really cheap. They don't use them for performance or durability gains. They usually delaminate on the very ends overtime. And the durability sucks. We test these setups for 1-4 million cycles. Coil over shocks are durable and hold more accurate suspension geometry.
I seriously doubt anyone on here can engineer a system like QA1. And from the work I've seen on people's cars, half the battle is sloppy quality and then the car won't track straight. You need to know a little more than just how to weld.
(And where's the guy that welded new axle ends on his 8 3/4 rear by clamping them to the tubes... Yea great work not using a narrowing jig).