Both devices have Automatic Incident Detection where the video is saved if a traffic incident is detected.

As far as the conversion itself, because the PCB P/Ns match you should be safely able to do a full conversion by flashing the delzcam's firmware as an RGN file in preboot mode. However the safest way is to first test it by doing a hybrid conversion using the nuvicam's boot.bin combined with the delzcam's fw_all.bin and resources.bin while retaining the nuvi HWID of 2043. If something goes belly-up it's easier to recover it to a nuvicam with the original HWID. You'll need to copy it's nonvol memory before you do anything too. Happy to assist further with the hybrid fw should you wish to proceed.