ECU is from a UCF20 Celsior. Should have a large plastic cover over the top of the engine with the centre of the plenum showing through. RH exhaust manifold should have the two rear cylinders in one (very ugly) runner. Fuel pressure regulator should be right at the back of the RH injector rail with round cast rails. Diagrams are the 96 ls400 ones in the Engine specs and diagrams at the bottom of the page. Use the pinouts not the colours. Double check you have 8 injector outputs. Cheers
