On my T/A I'm running 1.24 TBs, 225 lbs/ inch w/5" arch fbr-glass mono leafs, 1.25" solid front sway bar, 1' solid rear sway bar, Koni Red "D" adjustable shocks,.... car weighs ~3150 in max low-weight race trim... set up for smooth surfaces of autocross and/or road course tracks... also with past Hoosier A6 autocross race radials (16x10 rims, 275-45-16 tires)... sticks like glue, corners/handles great!
For any/everyday "local street/and hwy" cruising, I run on BFG T/As 255-60-15 fronts, 275-60-15s rear... both f/r are 15x8 minilite vintage rims... a very nice ride and with added comfort from the taller 60-series sidewalls.... they aren't bad for the road copurse lapping events, but no good for pylon autocrossing.
The low-mount rear sway bar does have the noted advantage of exhaust clearance (IF the pipes go over the differential), although my exhaust dumps just in front and down of the differential (weight savings... no tail pipes, etc). I'm not ceratin of how much an actual difference could be noticed with the rear sway bar above or below... I've recently observed the Gurnet race AAR having its rear sway bar mounted low, but still attached first to the frame rails, then to the differential.
I believe Helwig offers an adjustable frame-hung rear sway bar.. or else I think there's someone on our various e-chats that had Helwig make such a bar (that was the red Valiant out west)... and it was 3-point adjustable.
Running the narrower B-body differential does raise some concern about the required sway bar mounts... perhaps actually requiring an appropriately narrower rear bar if still mounted to the upper frame rails.
