wayne 256mm vented discs are 20mm thick, its the 280s that are 22mm

yeah as above, if you have vented front discs then late MK2 16v calipers will fit. can also find em on mk3s obviously, and also corrados, Passats and some SEAT models. MK3 Cabrios are mmostly fitted with 256mm front brakes. Polo 256mm calipers will bolt up as well, but the flexi pipe is different as said. you can get conversion pipes we got some for James' MK2 a couple years back. You might even be able to use Polo hoses, or in fact later MK3 GTI 288 hoses may bolt straight up thinking about it