I have just finished another small project for my vx220.
The standard heater is quite poor, the fess heater is much better but I wanted more 😃
So I purchased a 300mm x 200mm OEM Peugeot heater core and then spent a while trying to get it to fit :whistle:
Eventually I succeeded .....

The fan from the fess heater goes underneath

The cut out is where the fess fan fits and the resistor pack mounts neatly on the underside

I sealed the edges with industrial pipe tape

The unit bolts together, so quite easy to strip down


all complete and the battery still slides into place.
I have retained all the electrics from the fess heater, but moved the PCB to under the dash and ran just the 12v loom to the Ford heater valve.
The heater hoses are the original vx220 items between the matrix and valve and the other two are from a Peugeot.
The idea is the fan blows through the heater core and then into the channel created by the lid. It then passes back through the heater matrix for a second time and hopefully the preheated air gets even warmer on the second pass