Ford 1999 Wagon-Econoline Owner's Manual page 97

Rear seating positions
Attachment holes have been provided in your vehicle to attach anchor
hardware, if required. Tether anchor hardware kits (Part No. 613D74)
including instructions, may be obtained at no charge from any Ford
dealer.
• Second row bucket seats (at rear
of lower seat frame)
• 3–passenger bench seat (on rear
rail of seat cushion frame)
Seating and safety restraints
97