better to lube the drill bit so"s it dont get too hot ! couple of shots of wd40 does the trick the the bit will last the80 odd hard spot welds also id dot punch the welds first to give the bit something to initially bite on
vw polo 6n coilovers fit cheap on ebay lil mod to fit
http://www.ebay.co.uk/itm/COILOVER-VW-POLO-6N-ADJUSTABLE-SUSPENSION-/181534984080?hash=item2a44540790
heres how they fit
http://retrorides.proboards.com/thread/109399?page=1
no pics se@n but there around 40 ish some more obvious than overs drill chisel them open steady as you go!!!!! first remove drivers headlight plastic undertrays wheel liners front bumper theres a few bolts lol then you see were your drilling andy