^ Yeah that...
Just for reference, these are the rear spring rates I ran with each front bar I've put on the car to maintain the balanced handling:
36mm F-body front sway bar - 165# rear spring
1.5" 0.120" Wall Tube Front Bar - 182# rear spring
1.5" 0.250" Wall Tube Front Bar - 200# rear spring
1.5" 0.375" Wall Tube Front Bar - 250# rear spring
I've had 600# springs on the front ever since I put the coilovers on the car.
The rear sway bar has been the 1" solid lower control arm mounted bar that I've run forever.
I'm certain every car is different and by no means say that if you put these parts on your car, it'll handle like mine...but I've raced this car a lot with each of these setups and they have all worked great for me. They just keep getting better and better as we've upped the size of the front bar (and rear springs to match).