You may consider the same method I use on the Wilwoods- take them up to the Powder Coaters, tape off the pistons with duct tape, plug the bleeders with standard bolts, have them lightly sand blasted, dusted the color you wish and pop them in the PC oven. No, we don't remove seals or pistons, as I see it if they won't take the 425 degrees then I wouldn't want them on the car for brakes anyhow! No problem, many satisfied customers.....