I finally repaired that original set of silver grills from the Formula (the ones with the hood latch hole fiberglassed over as a theft deterrent).
Actually it wasn't that bad. I went to drill a starter hole in the fiberglass patch from the inside, out. I applied some pressure with the drill...and the plug just popped off! I guess he made a square plug out of fiberglass and then used some type of epoxy that didn't bond very well with the plastic. So, all I had to do was some light sanding and then reshot both grills with a light dusting of argent.
Even though I do like the blacked out Trans Am grills better, I figured I'd make the purists happy by putting the original silver Formula grills from this car, back in.