Can I use the Body Pillow or Head Pillow in forward-facing mode?

No — both the Body Pillow and Head Pillow are for rear-facing use only and must not be used when the seat is in forward-facing mode. Using additional padding or pillows other than those provided by Evenflo could interfere with the harness system or cause breathing problems if the child's head falls forward, increasing the risk of serious injury or death. Never attach additional padding, toys, or other devices not made by Evenflo or described in the manual. (Pages 20, 32)