Found this where someone claimed that the Radiomobile 1070X was the original radio in the E series. Unsure how true that is, could someone maybe verify this? Maybe the English Escorts had different radios?
Also found this which shows the Little Ripper Series Panelvan which appears to have a 8 stack radio. Maybe your van vmscon did originally have a 8 stack.
hak073 that picture you posted is of your car isn't it? You defiantly know that's what the car came with originally?
Typing in the part numbers listed above into Google isn't coming up with any pictures of the original radios.