Upgrading speakers/2004 F350

This guy happens to know a little about audio and also owns the same truck. King244, you can easily do oversize 6.5" components in the front doors, do this as it is a major improvement in tonal response. For a tweeter location, the sail panels are a great spot to mount the tweeters at the top so as to clear the dash on the drivers side. You can then also aim the tweeters to crossfire in the vehicle as well. Some hot glue, sandpaper, bondo, texture paint and time is all it takes to make some custom tweeter mounts. The speakers come to life when mounted like this. Make sure that you apply a good amount of sound deadening in the doors as they are one huge metal gong. If you do not want to do the 8" subs, have a look at the Pioneer shallow mount 12's or really nice AVI 10" sls500.

For remote start on this vehicle, there is no wait to start (glow plug) wire available. You will need a timer module in order to set the wait to start if it is a diesel model truck. A by far superior alarm r/s with a built in timer is the Compustar. Consider them at this time to keep the options open.

For the original poster, the number of ways in a speaker will not make it sound any better at all. Go out and listen to speakers and buy the ones that your ears like. Consider as well some sound deadening material as it will make a difference for you as well. I like the Eclipse coax speakers as my first choice. Before I added a amp to this system, I would as correctly pointed out above, replace the factory cd player with something aftermarket.