JCL, As far as the rotors, there are a couple of things to watch far. First, make sure they are not grooved(by brake pad failure)as long as they are smooth they are OK,if, second, they need to be above the recommended thickness, if they are too thin they well over heat the brakes and you will have brake fade, or worse yet, they will come apart. And third they need to have very little run out, or they need to be straight. Some times, in Corvettes especially, they are always needing to be rebled, but there are no leaks, the calipers will suck air into them through the piston and seal. Don't ask me how, they just do it. So, if the rotors are not too bad, I'd reuse them,(however if you need new ones I can help
). As far as rebuilding your calipers, I have done a few, for my own cars, I would never do one for a customers car, unless it was due to setting along time and they already had been sleeved. The ones I done cost me about $15.00 per caliper and took about an hour a piece. Some worked well, while others leaked worse then when I started, therefore I would never recommend rebuliding them. Also, when replaceing the calipers, I recommend replaceing them all(unless one or two are obviously already new)and replace all brake hoses and, as Bud said flush the system.....Hope this helps......Steve