Spent a bit of time working on the water hose layout the last few days.
My local Ford agent kindly emailed over a water hose layout for the Mk3 3.0 SVO, if I had a scanner I would post it up
Looking at the schematic, the top hose has the electric fan switch in it.
It looks like it will be possible to use the existing 2.5 di top hose, this fits the V6 thermostat housing, this will be joined to the rad with another short piece of hose, probably cut from the rad end of the di bottom hose and a custom 'T' piece which will house the fan switch.
The bottom hose on the SVO has a 'T' piece made in it which connects up to the large fitting at the base of the expansion tank, again a custom 'T' piece will be made, hopefully this will allow both top and bottom hoses to be assembled using the existing di items.
An electric fan switch will be supplied with the hose adapters, the operation temperature will be; on at 87 degrees C, off at 82 degrees C.
Would that be about suitable for the old Essex?
TIM