i know that they are two pieces.. i just wanted to know if the stainless steal ones and ceramic coated ones are different because i remember seeing the flex pipe on a SS one.. and i didnt see it one the ceramic one. im talking about the bottom piece of the header.. the part that attaches to the cat.. not the head. and i thought the caramic ones were made of stainless steal inside, and are just ceramic coated to prevent disipation of heat in the engine bay.