AFAIK, there are those two ring terminals; one on the AFM (case-to-chassis), an the one on the harness clamp (main FI ground), on the intake. The others are bullet connectors to sensors and other small items.
If you were to add a grounding circuit to the engine, what size wire would you suggest? I think I would use 10-12 ga stranded wire, and make a daisy-chain from the ground screw (on the firewall by the battery) around to the front (alternator) then over to the dizzy and AFM, then to the intake and cylinder head. Maybe you could then go inside to the ECU case.
Yeah, mgood definitely put in a LOT of time detailing the engine area, People ought to be running over to look a it to learn about their own Zs I had the engine out, and we cleaned, painted, and re-wrapped it all, and it still doesn't look that nice.