There's a knacker here for a grand, you'll need a trailer to collect
https://www.ebay.co.uk/itm/266223517079?
Used to work on Mk III Escorts. As my mate used to say they are just a horseless carriage, no technology at all. Fix any issue with a hammer, socket set and an arc welder.
Anything not working like the heater, ten minutes tops just to stick in another one. Scrapyard was full of them, no trouble getting any part for pennies
(or less if you just chucked them over the fence to your mate waiting in the lane on the other side...But we won't go into that).