Although it's not ideal, we do have a custom made to order plug n play harness we can make for your 89-97 1UZ equipped car (SC400, LS400, etc.). The Link G4X AtomX ECU is made to run minimal inputs/outputs as a budget standalone option for 4 cylinder vehicles, however it is possible to use this same box to run batch fire injectors, and wasted spark ignition on a V8 like a 1UZ. Link even has a sample map in their PCLink software to speed up the process!
As an official Link ECU dealer, we can also supply the Atom itself, and any ancillary sensors you may need!
Please note the Atom is not currently capable of controlling the IAC valve, so you will have to run without one or find other ways to control idle. This is for manual transmission applications only. If you intend on keeping the auto transmission, you would need to run an external transmission controller, manual valve body, or find another way to control it.
Base listing does NOT include the ECU as well, the AtomX ECU is an optional extra.