Yes it will fit your EX.
I paid $60 for mine, but it was before the mod was so popular. I had a source where I got them for cheap and I sold about a dozen for $120, now they are selling for quite a bit more. Ebay is your friend here. I believe my local Ford place wants under $400, so someplace charging $500 is way up there. Try Bob at
Powerstrokeshop.com - PSD and Ford Superduty Parts.
Thanks for the compliment on the grill too. Again Ebay, it was modified to fit my year truck, a dude bought it for $300, 6 days after installing it his truck was totaled from the rear and he sold it to me for $125. The upgraded headlights also made a huge difference. I plan on installing the 05 lights when I get a decent deal on some!
Take care