Hello neighbor! You can bring that paint back to like new with just a buff and polish and Dr Color Chip sells a fantastic paint chip kit. I have been working on mine a panel at a time because I have a broken shoulder, but heres my before and after of my hood, that's a one and done turtle wax on an orange foam pad and griots garage buffer, paint chips then turtle wax max wax on a black pad. the two of you together could prob do in a weekend no problem.
Also I have an aftermarket grille that will fit your car if you are interested. It’s new in the open box. Were i-10 and beltway - ish
A buff and polish is certainly not a bad idea. That would certainly help in the meantime.
How much are you asking for the grille? What brand is it?