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

My thinking is since you have no idea what the rear bar is there for, you make a lot of useless (technical) assumptions.

Let's start with this, please explain, using your best technical writing skills what you perceive is the intended purpose of the rear bar?
I can, but why play games here, you designed it, share it with us, and we can move on?
I disagree with your premise that I have no idea what it should be for, and that is your useless assumption.
So spill the beans.