Torsion bars the bigger the better???

Here’s where I want to do:
I already have kyb”s
Slant six torsion bars

Want:
Inch front sway bar
Rear stability bar
control arms
Good tires
Maybe four link
Racing sporadically mostly street and occasional road course

The issue i see with this is that you're outlining the parts you want, not the parts you need to accomplish the goal you're after.

I used to want a 5.0 ratio lever for my transmission.
Not because I needed it or even knew what it did, but because it was in the MP catalog.

The need for a rear bar is for tuning the suspension, same with front size. Build the car, run the car, does it oversteer? Understeer?
THEN you start picking bars.
With slant six t bars, it ain't gonna handle for ****.

You might build it and it is perfect, with no bars. (Not saying it's likely, but it's happened). This all depends on tires, spring rates, weight distribution, etc. Just cuz they make the biggest bar doesn't mean you need it. I don't run a rear bar on my car, and I run a factory front, and with my torsion bars, rear leaves, and mediocre shocks.... it's actually quite well mannered. Every car is different, every driver is different.