DOES THE HDK SUSPENSION K-MEMBER HANDLE BETTER THAN A T-BAR SUSPENSION?

Although I’ve never had chance to enjoy the HDK system, I would say that it undoubtably handles much better than a stock torsion bar setup, which was made for ride comfort over cornering. That’s my take on it anyway.
I think you (and a bunch of others) are missing the point here. This is not a discussion regarding stock torsion bar, as factory, set up VS a modern coil over conversion. Of course the coil overs would destroy that soft grandma goes to church set up. What @racerjoe has done is optimize (for the most part) BOTH systems and is now comparing them. He is one of the few people that have done an actual A to B changeover with each front end after they have been tuned/optimized to how he uses the car.