My car runs similar numbers....so I'll share what route I went.
Stock rear swaybar, the car felt like it was going to roll over into the other lane on launch...lol.
Swapped on a $300 Hellwig 1.125" adjustable rear bar, that connects to frame cross brace, instead of lower trailing arms.
This "helped", but even with preload on it, the car still rolled over to the right a fair amount.
Finally installed a BMR Xtreme drag bar, and car stays very straight now.
Only downside is that it's very heavy, since it's a solid 1-3/8" bar...but because it's solid, is probably why it works.
The Hellwig was hollow, so it had flex, and not too much better than stock
A lot of people use the UMI bar, and that's probably a better choice if you're weight conscious. It's only 50 bucks more than the BMR....
An actual ANTI ROLL BAR setup whoops all of the above, but pretty much guarantees no tailpipes, and a much more involved install....but it 100% cures any rollover...We have one on my son's supercharged Mustang and that car stays flat, no matter what.
Wolfe Race Craft - Detail