Hi Guys and Gals .. I am working on a 2001 Mitsubishi Eclipse Spyder GT . My question is , does any one know what material is used on the OME side skirts . I want to add a vent to the rear of the skirt just before the wheel opening . The after market side skirts I bought do not fit right so I`m think maybe I could warm up the plastic and mold my own vent in the stock side skirt . Has any one tried to mold the stock skirt … Any help / advise

They are urethane.

stock: urethane
aftermarket: polycarbonates, polypropylene, polyamides, polyesters, polyurethanes