The part number is the 7M5T-14A073-JF. I THINK the 8M5T number is software for the BCM (body control module/fuse box)

i'd be aware its not going to be a case of just whacking a fuse box in, there will need to be some degree of coding in the as-built data and coding of immobilizer/keys.

I fitted a new one to a Focus mk3 and it came with different pin layouts etc in the end had to have the Ford field engineer down to help install the damn thing..