the W5A 030 ( type 722.5) is basically the same transmission with an additional electrically controlled 5th gear overdrive section attached to the main body in a separate housing; it was available as an extra charge option.
This is how I understand it. Its not as reliable but allowed for higher speeds.
More under carriage pics would be helpful. UK cars can get pretty rusty.
any chance we can get some pictures of the under carriage?
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