I need to get my new (second hand) brake callipers on asap on WRX daily driver, but i bought a funky colour calliper paint [brush-on]. This has limited my options on getting a company to do it, as most just send them away / use their own methods / products and not the paint i've bought

I'm sure many of you have experience in such things, SO I'm after:

*Tips on prep'ing from someone who's done it themselves
*Advice / recommendations on spray on primer and lacquer

 

Are you stripping them down fully or just painting ?

 

I'd rather not strip the pistons out, i don't think the callipers are seized up, but how do i tell / check?