| also . . .
there are differences between the "gold-line" calipers and the P4 (4 padd'ers) - i.e larger swept area etc etc
The R's are the main culprits here - as well as a 15mm offset (instead of 10mm) they have the narrow-band type discs fitted and the older larger swept are discs will not work without modifying the brake pads - not recommended IMHO
There are also different materials used - cast iron and SS etc etc
no quite so simple when you look into it - but a good guide nonetheless
khushy | 
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