I'm not a big fan of stock Cobra brakes. They seemed like a lot of unnecessary hassle last time I worked on them. They also don't have real floaters on them. Someone posted a set of Alcon Roush brakes not long ago, and they looked awesome, had real 4 piston calipers, and were priced pretty well. 17" wheels are going to suck for drag racing, though. I use Aerospace brakes, which suposedly stop as well as Cobra brakes, and will work with a 15" wheel. They were a bit of pita to install though. You have to cut the ears off the spindle, and drill mounting holes out of the old dustcover holes.
Kurt