G'day everyone HSOH you mentioned in this thread (albeit back in 2002) that you had MK63 calipers for your Z. I am building a P510 for rally using ex works Southern Cross Rally gear I acquired here in Australia via www.datrats.com.au. FIA head (late model), 50mm Mikunis (magnesium bodied), magnesium airbox, option 2, R200 4 ramp pinion etc. My problem is I can't source MK63 calipers anywhere? Any advice? Thanks Brad