Fram's interchange is 2 (PH2/TG2/XG2)
The PH2 may be the original longer length. Same with the Wix 51372.
Ford did the same thing with their FL400s, which interchanges with Fram 3600 and Wix 51516. The new 400S is shorter than it used to be, but the Wix and Fram counterparts are the original longer length.