9 hrs!
the duplicolor caliper paint from advance auto sux ass to put on.
i tried spraying the first caliper with a super light coat of self etching primer and then brush on the caliper paint. when you try to apply the next coat of caliper paint, it eats into the coat before it. (monkey) i ended up "dabbing" a very thick final coat of paint to make it look good.
i only sprayed one caliper with the self etching primer because it didn't seem to help the process at all.
you need to buy half a dozen or so brushes. that paint dries fast and is impossible to get off the brush. i found a nice variety pack of brushes @ walmart for $5.
i would probably recommend going with a different brand of paint, maybe G2. or try your luck with the duplicolor spray version of caliper paint. i've never had much luck trying to paint calipers with the spray stuff. always bubbles, wrinkles, or doesn't stick, in atleast one spot or two.
then... there's powder coating. yea, that would look better and be a hell of a lot easier on the back.