The GT trim and the polished lip on the wheels compliment each other. The trim breaks up the car and visually makes the car look lower and longer. I say keep it, and just keep one eye open for the missing piece.
That's the plan. With the trim the car just looks like it's ready to take car of business. I talked to a Resto company at Spring Fling and he referred me to a junkyard in Oregon that might have that kind of stuff.