Just got my first car, a 2004 Mustang 3.9L V6 Automatic. Has a couple issues (power steering pump and transmission) but still in good condition. Looking for a couple cheaper mods to work on after I fix the mechanical issues. Want the car to look and sound cool, maybe increase hp.
There are all sorts of things you can do to modify your mustang, even with the V6. It can be made it to a badass camaro eater.
You should take a look at the '96-'04 general talk subforum. Snoop around a bit and read a few of the threads there. As you develop an idea of what you might want to do, post a new thread with plenty of pictures of your car.
You'll get real help there, everything from ASE certified techs to the guys that have already done what you want to do at home, they'll help you avoid the gremlins that can screw sht up for you.