Ok, i am stubborn as are most of you in this thread. (my opinion) not fact.
i can understand why they used a different block in a 500 as it was built to race, the 4wd was built to be safe to drive thats why i made the comment about the 205 in the first place as fords often used parts from earlier models to build new one's.
As for you stu i will happily buy you a muffin if you can send me a picture of your 1984 2wd escort cosworth