Homer,
I've got a pair of fiberglass on the back of my 46, as you just can't find the steel any more. Should you find a pair, you probably can't afford them.
The glass are a good fit, and look nice. You have to look underneath, and closely, to see that they are glass.
I would go with the glass, and keep your eye's and wallet open, if you're convinced otherwise.
Good Luck,
