Sway bar with large diameter t-bars?

paulclark said

That's important to me, I care more about handling turns than pounding the quarter mile.

More front sway bar stiffness makes for more oversteer/less understeer, is that how you mean?

Bottom line - I hear you guys saying it's worth adding even a factory sway bar even with heavier springs, so i'll go forward with that plan.

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Yes, a stiffer front sway bar will tend towards understeer, and a stiffer rear will tend towards oversteer. But a particular car may not need one on either end based on the roll rate provided by the main springs alone. As examples, IIRC some Porsches do not have a sway bar at one end, and many stock RWD cars come with only a front sway bar, as it tended to understeer that way and makes people back off before they get into oversteer and spin out.

The generic solution for better handing is to have both front and rear ones.