Im planning on replacing a junk motor in my 95 f-150. I've got a good carbed motor sitting on the floor and was planning on swapping heads and putting just the new block in and using the EFI. This decision was made after research told me that the carbed head is diff from the EFI head. After actually looking at the two, it looks like the only diff. is the ports for the smog pump that are in the EFI head. Injector ports are in the intake. Was told by a mechanic that if I eliminate the cat-convertor I can eliminate the smog pump and use the carbed head.

How wil that effect the O2 sensor and the computer?

Can anyone confirm that the head from the carbed motor will work with the EFI intake? If not, why?