I would be interested, but not for the ZCP rotors... I have the 338x26 rotors from the 135i (as well as calipers) on my E46, and have been toying with Racingbrakes 135i two piece rotors. If we could mix and match I would be interested.
2001 330Ci: Daily, some parts...
1994 325is: S50 Turbo track rat...
1987 325is: Sold!