undo the hold down screws and pull off, replace the rotor and install the new cap and then transfer plug wires one at a time to the proper location on the new cap.
The distributor cap is located on the top of the distributor on a 1996 Sunfire. It is connected to the spark plugs via a wire.
What about the timming
It's the distributor rotor that you are looking for & it's under the distributor cap. Remove the distributor cap and there you will find the rotor.
the bolts holding the distributor cap is a 7mm
under the distributor cap
According to about.com it doesn't have a distributor , it has 3 coil packs
Replace the screws.
1-6-5-4-3-2
There are two screws that hold it to the distributor.
18436572
To replace the distributor on a 1996 Nissan D21 pickup, first disconnect the battery and remove any components obstructing access to the distributor. Mark the position of the existing distributor and the ignition wires for reference, then remove the distributor cap and rotor. Unscrew the distributor hold-down bolt, lift the distributor out, and install the new one in the same position. Reconnect the ignition wires, replace the rotor and cap, and reconnect the battery to complete the installation.
Unbolt distributor cap. lift rotor off, remove and install new cam sensor (pick up plate) and reinstall rotor and cap.