I would imagine that if they are the same size that they possible might...the daughters 1.6 were identical in looks and style but smaller diameter...i would double check in vauxhall first..although i cant see them being any cheaper for the same size and thickness as if they fit more than one model it usually states this..against the price..
front disc for 2.0 ltr turbo on trade club are £95.62 (pair) +vat..doesnt state they fit any others either..
front pads £37.61+vat