Mt. Hope Tornado 

Although this tornado was officially an F4, I'd like to suggest that the Mt. Hope, Alabama tornado of April 3, 1974 be added to the list of possible F5 tornadoes. The SPC's List of F5 and EF5 tornadoes lists it as an F5 and even the List of Super Outbreak tornadoes mentions that some sources list it as an F5. Is there any reason why it isn't in the list of possible F5 tornadoes now?