It is necessary to fit it before paint. Some times that could include cutting, drilling or even relamination. There could be some marks of demolding on surface, it needs to be sprayed with filler before painting. Before ordering this product, make sure that you or your bodyhop has expirence with fitting fiberglass parts.It is not OEM part, but aftermarket. Product doesnt have TUV/RTI certificate. This item is in the category "Vehicle Parts & Accessories\Car Parts & Accessories\Exterior Parts & Accessories\Spoilers & Wings". The seller is "ustiltuning" and is located in this country: SI. This item can be shipped worldwide.