Classic 2 Current Fabrication is located in Detroit and uses OEM left-over steel.  1935 – 2010 including 1998 Buick Century rocker covers.

http://www.c2cfabrication.com/collections/all/amc+javelin+1971

C2C Fabrication is also available on Amazon:
http://www.amazon.com/gp/aag/main?ie=UTF8&asin=&isAmazonFulfilled=&isCBA=&marketplaceID=ATVPDKIKX0DER&orderID=&seller=A1B196KK1EQTLI&sshmPath=