I"m gonna try this on a different forum page.  I have a set of original cast iron FENTON headers of which that I am trying to determine fitment.  The Fenton part number is stamped on each the LH and RH  - 0708.  Can anyone decipher this part number as to the following:  239, 256, 272, 292, 312 and 1954, 1955, 1956, 1957 and whether a standard trans or auto trans.