That's what I used WAY back when when I did my nissan....

http://www.se-r.net/brakes/shell_b13/index.html

Held up pretty good, even under the heat of a couple of track days.

If the calipers are rusty - I'm not sure how well the paint will bond. As far as powedercoating - you'd have to dissasemble the piston and seals (doubt those would cook!)

__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net