Ya, that's how I did it. Clutch in and in gear.

With the clutch pedal pushed in the noise is reduced by about 98%. Otherwise in neutral with clutch pedal out it's a significant noise.

@crit I'll try that clutch suggestion to see if it separates the two. Power Commander eh, guess I have some more reading to do 🙂

Couple more interesting finds... I'm guessing this is a brake pressure sensor for a previous monitoring system. Looks like a third wire fell off or ...

Found it

Its fuel injected.

I only looked for 5 minutes but this is the only stamping I could see on the engine. And this heat sink looking thing is the only item screwed to t...

Your memory is correct, chassis number 96 with this engine and drivetrain installed. I actually don't know what ECU I have, I have been unable to l...

Additional questions... Where is the location of the wheel speed sensor? My stack display does not show speed. In this picture you can see ...