Looking at replacement costs for my 1950 series 61 cadillac gas tank. http://www.carparts.com/details/Replacement/Fuel_Tank/ARBP670103.html They claim thats a direct replacement and is only $143. Everyone on ebay wants $350-$400. Their picture looks nothing like the original. Why would they have an item For sale claiming exact replacement for my year make and model if it wasnt?