QA1 Tubular K Member - Who runs one on a street car? Reviews?

You need to be more specific. QA1 makes a tubular K that retains the torsion bars, and they have one that is a coil over/rack and pinion conversion.

I only see QA1 PN52313 listed for 67-72 A-bodies. The installation guide on the QA1 website specifically mentions torsion bars in the instructions.