i think its www.performancealloys.com if not, go to yahoo and check for performance alloys... its an amazing site
good prices and above all, they deliver to your house!
Look your manual and search for the correct alloys.My advise is not to change the 15'' because 1.2 have the correct tyres for car-size and brakes.You will loose in perfomance if you go to 16'' and 17'' or bigger tyres
People who buy 1.2's aren't really interested in perfomance. I ordered a 1.2 with 17" alloys and practically every accessory there is available. It's not fast but it looks great.