^that is correct.

the diverter plug is on the rear lower passenger side of the intake manifold.
the other plugs is as described above.

there are only 2 plugs in the area, and i think 3 plugs total to do the entire job. the third one being the throttle body harness.

Assuming you did the work for the crossover pipes, this shouldn't be hard to fix. it does require removal of the intake manifold though. You can barely reach the coolant temp sensor, but there is no way to reach the diverter valve plug with the manifold in place.