This may be a tad OT, but would any of the Aussies on this list know if this ECU is a rebadged Wolf/Microtech/etc.:
http://www.034efi.com/034ECUSTGII.html
It looks interesting - it'll do 8 injectors in SFI mode, and 8 coils in Direct Fire mode, plus there's a few GPO outputs left over for A/C, radiator fans, etc.
So while I don't have any experience with this ECU on the 1UZ, it looks like it would handle it nicely.
TIA,
John