To anyone who's done rear disc brake pads on a Bravo HGT or Marea. Do u need to srew (?) the caliper pistons in with a special tool or does it just slide back into it with a G-Clamp or summut.

you will need to a caliper wind back tool... strangely enough.
You can get one from halfords called sykes-pickavant.

sound...my mate works there.....cheers mate