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Yes that is a FOHA lip and it is my car as well! I bought mine from Techno Duck 6-7 years ago when he sold his. Tough to find but they do surface now and then.
It's not cost effective. Cheapest option would be fiberglass but they get damaged easily. ABS plastic would withstand damage better but a mold that size would be ~$10k and probably ~$100 in materials and machine time per lip. No idea what it would cost to get molds made for dense foam like the original FOHA lips but I imagine it would be in the same ball park as ABS plastic.
Just to recover initial investment costs, you'd have to sell 30 to 40 of them for $350-$450/shipped. I think you would be hard pressed to find 40 committed buyers who would be willing to wait possibly months for a new splitter but pay up front. Not impossible, just improbable.