If you're worried that you may screw up, or you want your stock inlay in case you don't end up liking the look of the grille you make, I have an inlay that already has the slats cut out if you'd like to buy it. Just PM me. This way you won't have to chop up your current inlay and be SOL if you don't end up liking it.
2005 Jeep Grand Cherokee Laredo
20% front tint, 5% windshield strip, tinted tails, factory jeep wheels painted black, 6K HIDs, aftermarket Kenwood (Garmin) NAV unit