Can anybody tell me?
 

How to remove the headlamps on a 98GT?

look at them, find the attachment points, disconnect them. FWIW, the side parts come out separately and screw in in the most ungodly difficult way. Have fun.

when you say side parts, are you talking about the side markers?? cause mine just popped out and werent held in with any screws. never tryed to take the headlights out though

last time I had to do that on a 94-98 stang there were screws holding the side markers in and some horrific method of keeping the fronts. Took me a while to find all the moving parts so to speak