gas tank filler necks

[fordman]

i forgot what is what withhtese. and i havent tried lookingthem up yet. i know the filler necks are 67-69 and 70-72. but 70-72 have 2 different lengths. which lenght is the short neck for? is it the emissions tank or the non emissions tank. i dont remember. i think it is non emissions am i correct?

[fordman]

i figured it out. the short necks are for emissions. the long necks are without emissions.