Hi Paul,
I have a set of XP discs on my 66 convertible so I think you should be right with those, however, my advice is to get the expert opinion of a brake specialist or reputable mechanic before you buy anything. Not sure what suburb in Melbourne you are in, but if you don't have someone you trust, try dropping into Steadfast Autos in Surrey Hills. They did mine and the boys there are friendly and really know their stuff.
