I'd soften the front sway bar and play with tires pressures first. No rear bar until like Sir Andy said, you run an LSD and/or a full cage.
If the back is loose then soften the rear shocks and/or lower your rear tire pressures first. Then you can soften the front as well to promote turn-in.
Remember!!!!!
Do one thing at a time and drive it.
If your front is plenty stiff then soften the front sway bar. For AX the front should be far less stiff than a road-course or street car to promote turn-in. Here's what I run and it's NOT competitive (AX) unless I run loose on the front sway bar and dial softer on the rear shocks. Don't worry about the spring/torsion bar rates since I have a six.
Front
23mm torsion bars
22mm sway bar
Bilstien Sport shocks
Poly-bronze bushings
Big Brakes
Rear
200# adj. coil springs
Poly-bronze bushings
Koni-adj shocks
I have a rear sway bar I'll be puttin' in soon but the limited slip (clutch-type) doesn't make for a wonderful AX turn-in until the rear is looser and the front is run soft. For AX only a Torque-Bias'd diff is (usually) better since it goes "open" on decelleration.
Air pressure in the tires is also critical and the more stiff your car is the more critical it becomes. I can modulate a lot of over/understeer with tire pressures alone.
Good Luck!