F series is the way to go, 7.5" center.
you will find them in mkII corona ( same track as 86) or in Yr22 tarago +50mm?? cant remember. they will take punishment all day, tried, tested and proven.
Mechanical LSD's available as well from all popular Japanese manufacturers.
Can't really go wrong.
Ps just to make it clear, this center won't fit in your E series.