NewbieCivic

can anyone tell me what are the best spark plugs and the best fuel injectors for a 94 honda civic ex...i need to change the spark plugs cause its been 2 yrs jus like it says in the manual..and the fuel injectors are gettin old also...i need something that will help my car performance wise and bring out the tru power of the 94 ex's can anyone help me or give me some ideas on wat i can do to bring out more power...this is what i have in my car right now... DC 4-2-1 headers, Injen short Ram Intake, and DC catback Exhaust...any ideas on what else i can put on?..thanx