What brakes do you have NOW? JB3/JN3? JB5? JB6?
What vehicle? What booster--vacuum or hydroboost?
If you've got the hateful, crappy 254mm (10-inch) rear drums, THAT'S almost certainly the biggest problem, not so much the front brakes. Or maybe you've got the "good" 11.x Duo-Servo rear brakes, but the brake hose is plugged so they don't work.
Add to that the likelyhood that after all these years, the ABS may need PROPER bleeding, the existing front calipers may have sticky pistons, or the calipers may not slide properly on the mounting pins. Might be you could have a significant "upgrade" in braking power by scrapping the REAR brakes, and merely "fixing" the fronts so they work like they're supposed to.
In other words, it would be worth your time and effort to carefully inspect your existing brakes for defects; and if the fluid looks horrible as is so often the case, the calipers/wheel cylinders may be totaled inside where you can't see it easily.
Two Freaking Thousand dollars for fancy front brakes is silly if the big problem is in the rear; or if there's air trapped in the ABS unit, or if your front brakes are outright defective but could be economically repaired. And with extra-powerful front brakes, how are you going to maintain front/rear brake balance? Will those bigass rotors clear your wheels, or do you need new wheels and tires in addition?
Nope. Not my first choice.