The grill delete that came stock on my 2003 Mach 1 was held on the bottom by push nuts instead of screws. PITA to remove. I've taken off a honeycomb grill with the four screws and speednuts on the bottom and it was a little easier, but not by much.

 

Doing the grill on a friend's '01 wasn't hard at all once we took the bumper off.
Taking off the bumper isn't that hard either (especially if you have a hoist available) once you figure out that all you have to do is take out of a few pushpins from the top and side of the bumper and four screws from the inside of the fenders.

 

I just throught the hole damn thing in the dumpster!