Atrend Dual 10 Inch Sealed Carpeted Subwoofer Enclosure - A332-10CP

2" seat lift kit incl. (will have to raise seats). 1¼" clearance under box. 1999 Truck Owners: There were two different sets of rear seats for the 1999 model year. 1999A: The seat cushion folds forward and rests on the floor. 1999B: The seat cushion flips back and rests against the back cushion. The lift kit is only needed for the 1997, 1998, and 1999A model years. *Will not work with F250/F350 Extended Cabs.