Hey there I am new to the whole Dodge thing. I am loving it so far. I got an 04 Ram Hemi Sport. I have a k&n drop in filter with a access cover on the bed. It needs a tune up what would you say would be a better plug for it? I was looking to do those new E3 plugs. What do you say? Also looking to do exhaust work. What would you say bout that also. I am on a tight tight budget with a wife and kid. Let me know thanks.