Dude you already have the stock front facing hood, just throw on a pre-painted 01-04 hood scoop from American Muscle and call the front done. That will also eliminate the fading honeycomb on the stock hood.
For the rear, I'd say a GT rear bumper if you plan on dual exiting tips..if not leave the stock v6 bumper and dump them under the car. If you want a different spoiler stick with OEM or Mustang specific aftermarket - Saleen, Roush etc., please no Cobra R benches unless you really want to.
You already have a real good looking car with tasteful additions, some people go over the top with appearance and it ruins the flow of the body styling.
Just my opinion
12 Black GT500 SVT PP l VMP TVS l JLT123 l O/R X l 28x11.50Rx15 M/T Street R's l BMR Suspension l Recaros
03 Sonic Blue 3.8 / 17 Magnetic Fusion Sport 2.7 EB