So i just had to replace my 2/5 coil pack with one i borrowed off the malbu my dad is redoing the engine in..i was just wondering if i would get any NOTICEABLE benifit from getting like ngk or msd coilpacks plugs and wires..namely fuel mileage but a little more get up and go would work too..2000 3.8 all stock haha..

 

If the engine is not misfiring, and the engine is basically stock, a stronger ignition is not going to improve things.