The CAS electronic module itself is the same (black plastic electronic module is removable from the CAS). So if you remove it from either an EVO I-III or GSR or Proton GTi/M21 it will work. If you want the complete CAS, then a GSR or Proton M21/GTi (pre 2003 model) will work.
CVAP should have some EVO or GSR units available. If not, give ACE AUTO SPARES in Sydney a call as they are Proton wreckers. Details: 72 Railway St, Yennora, NSW 2161. Ph: (02) 9892 1010 and ask for a Proton GTi or M21 Crank Angle sensor off a Mitsubishi ECU model M21 or GTi (not a SIEMENS model Proton as they had a different CAS which was bolted down near the harmonic balancer) :wink: