Call Britax. DH was in a similar rear end accident a few years ago. DD2 was in her seat but DD1 was with me. Both Britax and Safety First overnighted me replacement seats and all I had to do was box up the old seats and they sent UPS to retrieve them at no charge.
Mom to two amazing DDs ('07 & '09) and a fur baby.
Gluten free since Nov '11 after non-celiac gluten sensitive diagnosis. Have had great improvement or total elimination of: migraines, bloating/distention, heartburn, cystic acne, canker sores, bleeding gums, eczema on elbows, dry skin and scalp, muscle cramps, PMS, hair loss, heart palpitations, fatigue. I'm amazed.