they are 560cc I just sold a set
think that reading is taken at 3 bar pressure rate though so actually at 3.5bar rising pressure rate they will actually be over 600cc
I did a thread a little while back with regard to pressure rates etc and sizing of injectors and someone put a link up how to work it out with pressure youll be using, so in a nutshell the 560cc is only a guide to what they will put out at a given pressure rating, doesn't necessarily mean that's what they will be on your car
here it is
http://www.gtir-motorsport-club.com/t2250-mapping-and-injector-size-possible-issues