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

How much money did the OP spend on the suspension system?
It is unknown how low the car is, how low matters - roll center
I don't see where the car got any further chassis stiffening with either system
Without it there is large amount of twist in the unibody. With the proper stiffening and a welded k frame there is no dead spot in the middle of the steering -not conjecture just plain old experience. Unfortunately there was no time spent flogging the car on a road course - where the big dogs run. Lap times show results, i have no love for autocross but that is just me. I like driving, feeling, hearing the car bark at the moon under full power for long periods of time and running lap times that old stock looking mopars are not supposed to have. It's intoxicating.