Fuel tank connector [E1TZ-9047-J] - NOS

[1986F150Six]

https://www.ebay.com/itm/255221954902?epid=1527904060&hash=item3b6c69f956:g:BdUAAOSwIqlhjFB~

[Gary Lewis]

This is puzzling.  The MPC has two entries for part number E1TZ 9047-J.

80 F250/350(81)  E0TZ 9047-S r/b E1TZ 9047-J

81/on F100/350 (Regular Cab and Super Cab) & 81/on F250/350(Chassis Cab) E1TZ 9047-J

The puzzling thing is the "81" that I made bold in the first entry.  Ford uses "83" as the body code for Flaresides & "99" for Stylesides, and I first thought that it was a typo.  But then I realized that there are several of them in that area of the MPC an they all take the form of "80/ FXXX/350(81)".

So, are they saying that the 1981 F350's also used the original E0TZ 9047-S part?