CVR and FDR were originally in that part of the plane
Normally they are AFT of the pressure bulkhead. I have yet to see a photo of the bulkhead or fragments. It seems to be pobable that the location of the CVRFDR is/was on the bottom aft of the bulkhead and was torn off at the same time. Which does raise a question as to why near the bottom which hits first normally instead of near top of bulkhead ?