I believe that the G2 caliper paint is brush on. With the cash that you’ve invested into your calipers, I personally would never consider brush on paint. I would lightly sand, primer (also acts as a fill agent), paint, then clear. All those products can be found specifically designed for brake calipers. Good luck!
2014 Mustang GT Coupe Premium. Options include: California Special package, comfort package, navigation, glass roof, shaker pro system, 3.73 ratio limited slip axle, GT front grill/fogs, MGW race spec shifter, BBK X-Pipe, Corsa GT500 Quad Sport axle-back, Ford Racing ProCal tune. "If I wanted insane HP, I would have purchased a 2014 Shelby GT500!"