The valance from LMC has received some praise.
The part from Late Model Resto is a Cervini's piece and although the quality may be pretty good the price is a bit extreme at $205.00.
I'd imagine, based on my experience, that the NPD part is identical to the LMC part.
Rock Auto also carries the valance and it's really inexpensive ($25.00) but they want no less that $71.00 for shipping.