I don't know how tight the engine compartment is in the new bodied cars but I did a full tune up (ap104s, wires, coil packs, pcv valve and fuel filter) last weekend in my 98 GTP and even with the engine rocked forward the plugs/wires were a P.I.T.A. It was more of getting in a reasonably comfortable position to see what you are doing (while laying on top of the engine) than reaching them. This was my first one on a 3800 so maby the fellas with more experience can give you better tips.