Here's my near-stock 2003 Mustang 232:
The GT hood scoop, wheels, and door decals came as part of the "Pony Package," which I think was only available (this time around) on '03s and '04s. The only asthetic mod I've done is to install WebElectric Products sequential turn signals.
Here she is:



Here's a shot of one of my stock Goodyears (with 55,000 quick miles on 'em) next to one of my new BFG G-Force KDW tires:

These things stick like crazy, both on dry and wet pavement. The Goodyears were 225/55/16s, and the BFGs are 245/50/16s, so they're a fair amount wider. Unfortunately they've made it obvious that the stock suspesion is the weak point in the handling...
I replaced the stock brake pads with Hawk HPS Street pads, and combined with the tires the stopping force is almost violent.
Here's my stock-for-now motor, a 232 cid V6:

I also have a Geocities page with more pics and info.