I am looking to replace the spark plugs and spark plug wires on my LS but don't know exactly what I need. Also not sure if I should replace the distributor cap. If anyone could let me know what I would need and possibly any suggestions, I would greatly appreciate it.

I would go back with stock everything excpet the plug wires, for the plug wires you should try accel they are a perfect fit and I went through a lot of different brands to finally end up with them. You will need to replave your distributor cap, rotor, plug wires and plugs to doa full igniton tune up.