[JLMounce]

Having good brakes when upgrading horsepower is smart, but you don't necessarily need big brakes. What you need is a brake combination that has enough clamping force to lock up the wheels. One this is achieved, adding traction is the only real way to reduce stopping distances.

I run the Nitto NT555 G2 and have been pretty happy with it. It's decently grippy, quiet and has a smooth ride for an ultra high performance summer tire. It also has a fairly wide array of sizes that are complimentary to our cars.

I think you could definitely do a rear disc conversion and that will help some with repeatability. I would do a standard rear disc conversion that will use 11" vented rotors and metric calipers. You can use your factory master cylinder with this combination. I would upgrade the pads to something like a Hawk HP, or my personal favorite, the Carbotech 1521. Matched with a performance tire, you'll have a braking system that is well suited for a street only car.

Of course if you're wanting to go to 17" or 18" wheels and just want to fill them up with a big brake system, that sometimes can be reason to go that direction. Depending on the calipers used, you may need a different master though.