New ignition coils, wires, and plugs.

So I tried looking for some forums that gave me a definite answer but I couldn't seem to find one. Correct me if I'm wrong but I want the "C" Version of the ignition coils, and is it okay to have NGK plug and wires?? I was going to buy them off of mazmart. Why are the OEM more, and should I just go with those instead?

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