I had a small coolant leak through blanking plate on one of the heads due to rust.
New blanking plates are still available new from Jaguar for 12gbp/peace.
I decided that I can do better for that price 
I made slightly thicker plates from stainless steel:
3 Likes
nice !
I just replaced all seals and cleaned those plates while renewing the coolant rails, so will pass on those for now 