318 1/8 time improvement

Not necessary true I had t bars on my 340 clone with basically the same parts
Exc posi and more intake and a 450 lift cam won’t say they cured the traction but they did hellp a lot !! I don’t care if they don’t work well and being old school
I remember seeing bars on many card
It was kind of a status symbol and on my 70 Dart will have chrome side pipes
Chrome t bars, chrome bumpers, chrome
Air cleaner, chrome bumblebee stripe, chrome valve covers, custom chrome dash with 20 gauges and so forth
Yes, back in the day I had traction bars on my 67 Barracuda for a short while because I thought they were "cool"....my car was also quite slow back then (16.5 at 9500' DA), so it made no difference in reality.

To each their own...you do you...

To the OP, I ran a simple snubber, worn out original springs, and cheap-o drag CE drag shocks down into the high 10's @ 122mph before stepping up to Cal-Tracs.....The slapper bars really don't do much. On a slow car all you really need is a mildly sticky tire and a decent shock.