Would these fit to a mk3 polo?
http://cgi.ebay.co.uk/genuine-vw-g60-golf-arches-full-set-brand-new-/250835376240?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a66f41870#ht_500wt_1156
http://cgi.ebay.co.uk/Vw-Golf-Gti-Mk2-Genuine-VAG-G60-Arches-/260798667913?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3cb8cfdc89#ht_500wt_1156
It can and has been done but it's far from a straight fit, there was a thread on Club Polo about it a little while back. One of the problems, other than being the wrong shape, is the Polo doesn't have a full front arch like the Golf so the front bumper will need some work too.