I just bought a 2001 gtp and its getting crap mpg. The car has 175*** miles so I'm just doing a good maintainence on it to try and save the gas mileage, already put new fuel filter and injectors in, about to change the coolant and put in a new thermostat, but i want to put new spark plugs and wires in the car and was wondering if anyone could tell what the best set up would be? The car is a daily driver not needing performance just reliability and better mpg, any advice would help