Howdy Folks -
theman is right on - in fact, a more cost effective upgrade on the already excellent factory brakes is simply some improved pads, stainless lines, and good fluid - FYI, the Ford (I know, off all places!) HD Brake Fluid has a wet/dry boiling point as high (and higher in some cases) as the boutique fluids costing $15-20 bottle - price? $2.50 a can

That's a well kept secret in the road race and a/x community. Of course, you'll fell like a retard pulling into a Ford lot with your Toyota!
*If* you do want to go all out, there are several manufacturers of aftermarket, high end systems, that will typically set you back starting at about $2000. FYI, I'm running the AP/Stillen setup.(Stillen makes the high end system, Rod makes simple upgrades).
They're 13.8" drilled/slotted, cryo'ed, aluminum hats, and 6-piston calipers with a ~77 sq/cm of pad area (pads look like a sub sandwich) - and these things will haul you down again and again and again without any sign of fading - roughly $2500 for the fronts only - using Brembo upgraded discs in the rear.
Seeya -