See here but you Griff boys might be able to help me as same brakes as a 500
http://www.pistonheads.co.uk/gassing/topic.asp?t=189101&f=8&h=0
Most good aftermarket front discs will not require the spacers. Simply put the spacer on the other side of caliper mount so that you do not need to shorten the bolt length (also means you don't lose them if you require them in the future)
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