Hey buddy
The SAFC is a fuel only computer, so short answer no you wont be able to run the Z32 off it. That also applies to after market injectors.
You can run the Z32/Q45 with a REMAP ECU with no issues, but if you were to go with a REMAP or any form of after market stand alone ECU (WOLF, MICROTECH, PFC etc) there would be no need for a SAFC as the REMAP, WOLF, PFC, MICROTECH will do EVERYTHING for you.
An SAFC is only a fuel only computer, piggy back, which alters the signals from the ECU, where as a REMAP is basically a full retune of the standard ECU.
Hope that helps.