A modified OEM vehicle having an interior for accommodating a passenger in a wheelchair including a floor base assembly, a seat, and a seat base assembly operatively connected to the seat. The seat base assembly includes a lower seat base assembly configured to be coupled to the floor base assembly, an upper seat base assembly pivotably coupled to the lower seat base assembly, and an actuator coupled to the lower seat base assembly and to the upper seat assembly. The the actuator includes a retracted position in which the seat is located in a seated position and an extended position in which the seat is located in a tilted position, wherein the tilted position of the seat provides additional space for the wheelchair within the interior of the vehicle.
