Update >> Got some brand new Astra CDTI discs and some ST185 Single Piston Calipers and new Yellow Stuff Pads on order. Really pleased! Calipers in good nick, with only a small amount of surface rust, all seals in tact and a moving pistons:) Will be giving these a bloody good clean first of course and then painting. Test fitted the discs this evening and i'm glad to say i've bought the right ones Will be dropping them to a friends Engineering Workshop tomorrow to have the necessary metal taken off them:) So will hopefully have these fitted within the next week! Thanks to Amjad for helping me with some info!