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You didn't say what year nor mile age. Probably needs plugs Champion 7440, (if you do not have a turbo),they are double platinum plugs. Gap at .040, use anti seize grease. I also used MOPAR High Performance wires (can get at dealer, may have to order). On the wires use dialectric grease.
Torque plugs to 13 ft lbs. If you have a NA you will have to remove the intake, to replace torque in this sequence 5, 3,1, 2,4 at 105 inch pounds. Don't worry about the intake gaskets unless you damage one during replacement. Good Luck