roughed the caliper using a green scourer, cleaned and sprayed with hammerite smooth, no primer as the paint is quite thick with multiple thin coats, high gloss so no need for lacquer
I'm gonna be using just a regular aerosol as I couldn't find s decent match to Le mans blue in anything else sadly So I'll probe need to use primer and lacquer as its a metallic colour!
I would primer if i was you and use a vht lacquer if poss