I have PST 1.03" bars in my 451 (lowdeck) A-body. They feel great on the street, firm but not harsh. the 892/3 bars (0.89"?) were way too soft and the front end wallowed.

The stiffer bars probably hamper the launch a little despite the Caltracs, but I don't do WOT on public roads anyway.
If anyone is watching.