356 Parts Rare 356 4cam Used - ELEVENPARTS One set of very good used 60mm Porsche 356 Carrera GT front brake drums. With original GT brake shoes. Both measure standard 280mm, one has a small nick from storage, but nothing to worry. Used standard on all Carrera GT's, 356A to B and also available as option for all A and B models. Impressive improvement in braking power.