Allright listen up people
94+ OHV has a cam sensor, it is located at the back of the upper intake manifold:
the 97-2004 SOHC has this sensor ALSO and the valve cover mounted sensor.
There is no CAM/lifters/pushrods in the SOHC where the OHV cam used to be BUT there is a DUMMY cam in there because this is what drives the oil pump.
I am not sure about 2005+ but I am gonna go out on a limb and say its still there.....
The SOHC definatley has two cam sensors, one is actually used to tell the computer the over head cam position/speed/etc the one on the back of the block is still only used for initial start up.
When Brett did his SOHC conversion he had to make some wiring changes to accomodate the oil pump shaft mounted 2004 SOHC cam sensor, completely ignoring the valve cover mounted sensor because he is using a OHV computer.
I believe I already said all this, but um yeah if your Ford dealer says there is only one well then there must only be one, right? Dont lsiten to the people who actually pull these engines and work on them or with them, listen to the parts guy at the counter! hahahaha
both OHV and SOHC have a cam sensor mounted right here: