Oh i didn't make that! That's a screenshot of a product you can buy, Though i'll give it a crack when the time comes. 

The details from MArkA, incase it helps anyone also, is from AEOW in Queensland.
website:https://www.aeowparts.com/all-products?Category=Printed+Circuits+for+Instrument+Clusters 
 
$75.00

thanks Mark!

since everyone else is playing with their heaters, i may as well do the same.
Stripped down, cleaned up

I thought someone may have been in here before me at some stage, unless the styrene foam was a common thing. The motor was pretty tight to rotate but freed up. The O ring seal was stiff and going crusty, but some liberal coating in whatever oily stuff that was close to hand (Le Tan SPF30+) actually breathed new life into it. The seal came up a treat, going back to pliable and soft. Plus when its buggeringly cold and I need the heater, we'll get a pleasent coconut scent reminder of being on hols. Or it will rot the seal in a couple of weeks, stay tuned.

I thought the core might have survived, but it dribbled slightly and needs a bit more of a test.
 

Nice! My heater core should arrive by the weekend according to Aus Post so if you need a new one i'll let you know if this supplier is any good
 

That would be great.
I havent been sure from the website which was the correct core for the metal (mk1?)version heaters.
Would be good if they gave dimensions: the one I have in cthe pics is 270w x 80d x 100h, and 220mm overall height.
 
I'm thinking about painting a dotted line inside the van:
front 1/2 of the mk2 van is mk2 up to the firewall, and everything back including  the heater, was mk1.?
Well, maybe at least when it left the factory. Now, who knows.
 
Cluster guage sheet for the 4 door is on its way. Thanks Mark for the link.

Here you go, measurements below.
 
Came really well packed and is good build quality, light and holds pressure.
 
 
Height including pipes
 

 
Thickness
 

 
height without pipes
 

 
Length
 

 
how it was packed inside the shipping box
 

thanks, you def have the mK2 box then, mines a mk1.
I'll see if your supplier does those also, but they didnt pop up last time I have a quick squiz.
Glad you can start to rebuild it now.

Deano I'm sure the heater core will be the same throughout the Escort range. If the bulkhead is the same and stuff, they would've changed the box instead of heater, and I'm sure I've used either in both, the only thing I might think is different is the thickness. Early mk1 boxes were fglass then they went to sheet metal until mid 77 when they changed to plastic with a middle running split seam, from my experience with mk1 and mk2. If I'm not mistaken....

There's two types of heater cores. Pretty sure 70-77 and then 77 on with the full plastic boxes.
I have both here if you need something

Mebby ..