Pop the hood and reach around to get to the back of the headlight assembly. Both bulbs (normal and high-beam) should be visable. If memory serves, a 1/4 turn to the right should release them - but they are a bit tricky to have some patience. Actually, on the driver side you need to remove the air filter box (just one screw as I recall). The box lifts up and then yo ucan reach around to change the bulb. I'd suggest you change the air filter while you are at it. Passenger's side is much easier.
Yes
If both are stock, the Magnum RT will be a half second faster in the 1/4 mile.
The front speakers sre 6 1/2
Stock headlights and 8000k "headlights" differ in color. (8000K refers to color temperature) Usually, stock headlights are rated at 4000 - 4300k (yellowish) 8000K headlights are aqua blueish.
Stock Dodge Magnum 360 engine in the Ram was rated at 245hp/335ft-lbs of torque.
the dodge 360 1994 that i dynoed with everything stock was pushing 424.6 Hp @ 5500 RPM 230 hp was the advertised rating.
You have to purchase headlights with halo, stock lights can't be modified to have such option. You can get halo headlights from Ebay.
If you install headlights other than stock equipment, yes.
1993 Dodge Shadow stock in reverce.
Yes.
No, the 2009 Murano comes stock with halogen headlights. However, you can buy after-market Xeon headlights for the Murano.
LS headlights are easy to remove. I have had mine off a number of times to dry them with a blow dryer after condensation formed. Remove the radiator shroud (pop-clips) Remove the screws that hold the headlight assembly to the radiator support (two?) Tilt the assembly forward enough to remove the low and high beam bulbs (twist locks) Lift the headlight assembly away from the car