Go to another key supplier!!! They don't have a clue at the place you went!!!!
They didn't put chips in our keys, the PATS system didn't even start until sometime in the mid 2000s. It seems like I remember the Super duties didn't have them until 2008... I may be off a year or so but still the point is that a 1997 250HD don't use it...
No matter how carefully you choose your words, they'll always end up being twisted by others!
1993 Thunderbird LX 3.8L AOD.
1997 Explorer XLT 4X2 4.0L SOHC 5R55E
1997 F-250 HD Extended cab, long bed, 5.8L, E4OD.