As it's a CVH most other CVH rads (Fiesta MK2/3, Escort MK3-7) can be connected to the hoses BUT
as mentioned before the S2 had a unique rad as iit had the intercooler mounted next to it so it has the intercooler mounting points AND it therefore is not as wide as an XR3i rad but is a bit thicker
Prices for a standard one @Ford are VERY high nowadays, tried an aftermarket part? Autospecialists maybe?
https://www.autospecialists.co.uk/pr...ec-motorsport/