can somebody help me on how to remove the pony package grill so i can replace the lights?

Google is your friend for searching these forums :)

http://mustangforums.com/m_4513846/tm.htm

That's for the pony package fogs

I've said this before, but it bares repeating. The plastic radiator cover is held down by plastic press-in clips. The ones that are two-piece require you to pull up/out the round center part first. If you try to remove the clip from the outer edge, it'll break.

The owners manual shows how. :D
Or here:
http://iihs.net/fsm/?dir=391

GREAT LINK !! 157db :)