I've just restored some really cool oz-sparco alloys; however they are for vauxhall (4x100) ET 49 with a 56.1mm centre bore...the pcd is easy to solve by using wobbly bolts, the ET easy as well by buying some spacers...however I don't know what to do with the centre bore as it is smaller than the one for Fiat and all the 10mm spacers I can get are hubcentric with a bigger centre bore...any ideas??? thanks!