my post will either be a gift from the gods or something you've already come accross and discounted:
I too have just purchased a 2005 jeep grand cherokee laredo. the factory stereo is horrible. i have purchased all of the components to build my car pc save for the screen.
I stumbled upon this site and found that they offered a mopar dash bezel that answered all my prayers. It arrived last week. Days upon days of custom installation work could not have netted me a more perfect solution. Seeing the piece from the reverse side, you'll quickly see how easy it will be to create an oem look. On top of all that, it makes the whole cherokee dash look more pronounced and stylish.
I've got to run at the moment, but understand that i will be bugging you with questions/ideas from now until the point when you quit the forum as i believe you are the only other here with this car model. stay tuned!