It looks like you have a 82 and up grill. There are four screws in each headlight bezel (T15 torx). Remove both headlight bezels before you try to take out the grill. The grill has a bunch of reusable plastic connectors, kinda like rivets. Pull the center of the connector out about 1/4" with a pair of needle-nose pliers and it'll release it's grip on the header panel.