[5.0 ED]

Something i'll point out that was originally mentioned about the 3.08 diff's, its actually not the casing that is different it is the centre itself, you can pull the actual centre out and replace it with a different say 3.45 centre and use the other diff gears.

Commodore 3.45 VL gears that fit are non turbo and 75 series, they are super weak and break very easily, i really dont recommend this path.

My diff in my ED is a 3.08 factory unit, i replaced the centre with a LSD unit out of a 3.45 XR6 EF from memory, and install 3.45, then 3.89 and then 3.91 diff gears into it.

The 3.45's broke, the 3.89's broke and wear always noisy, and the 3.91's are nice quiet and super strong. unlike the weaker made 3.45's and 3.89's. The key point here is, there are stronger made 3.45's in ford's and weak one's in commodore's except Turbo's and so on.

All v8 ghia's both fairlane and fairmont i have see have had 3.23 single spinners...