connectors and determined OK and other things noted above I suggest you upgrade all 6 to the new style pintleless injectors and new connectors. You will also need the adapters to mount the new injectors to the intake manifold. Hope you are a wrencher or know somebody that is really good with Z32 repairs because this conversion is not done at the dealer.
When I did the replacement I noticed that the wires feeding the connectors had green corrosion and I had to cut back the wires about 2+ inches to get clean copper wire.