Hey wassup...it did cross my mind to try to modify a tl a-spec side skirt but i dont know for sure that it will fit and im dont wana take that chance, im sure with alot of modding it can be done but dont know how its going to look. for the rear lip the only cutting is done to ur bumper not the lip, u have to make cut outs where the cut outs of the lip are to allow it to sit flush once u see behind the bumper u will know what im talking about its marked already so u will know what to cut just follow that, and the rest is stretching the lip from side to side and screw it in.