This listing is for the four individual floor pans for a 58 Chevrolet passenger car. They have the correct thickness & pattern. There are other brands out there that are thinner and make installation more difficult. From our experience we feel these are inferior sheet metal pieces.Please take a look at our store to see other items for your 58 as well as many other makes and models. Auto City Classic specializes in the 1958 Chevrolet. Our parts are made to original specifications and we have done countless restorations which has given us all the knowledge we need to help you with your restoration. The item "1958 Chevrolet Impala Bel Air Biscayne Delray floor pans SET OF 4" is in sale since Thursday, September 27, 2018. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Exterior\Other". The seller is "tomsclassic" and is located in Isanti, Minnesota. This item can be shipped worldwide.