My flex pipe is toast. I bought a dynomax cat back, but it doesn't come with a flex pipe. Can anyone give me a part number, and or specs as fas as the diameter of the inlet (which has a bolt on fitting) and the end that goes on the resonator. I bought this one on ebay :http://cgi.ebay.com/ebaymotors/Ford...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories and they bullcrapped me because it looks too small.