Wait, reverse my previous post, EF XR are the orphans, I misread gogettas pics.

EF standard are same as EB-ED, EL.
EF XR = weird.

EL arms I think are longer lthan EF ones (why the different mounting holes) and XR arm are shorter than EF as in pics. Not 100% sure on this but if you jack up the car from middle of the diff (place on stands for safety) you can check the pinion angle easy enough.

from my understanding the EL diff used alot of the geometry from the EF XR (check the rear diff plate the rear link is 20mm lower like the XR's) but if its a standard EL diff use the standard EL arms. Also handbrake setup is slightly different too, so you need the handbrake setup for an EL diff too.

Here's a pic of EL diff brackets, the top ones. This is a std diff.

 

 

Attachments:

EL Diff housing 002.jpg [ 369.72 KiB | Viewed 120 times ]

So should I mount the upper arms to the front lower position as I have them in the upper point at this moment.

Dunno dude, but that was taken from a std EL sedan. Just suck it 'n' see.

I have an EL xr6 diff in my EF, I'm using the front mounting holes with no problems at all. BUT mine is a series 2 EF and the Bolt would not fit through the top hole (the bolt was too large) so that's why I'm using the front lower bolt hole. Though, the rear end of my car sits up about an extra inch or lesser now.

if u have EL arms and std height springs then use the front lower

if u have EF arms and std springs use the upper hole

if u have lowered springs get the EL XR arms and use the rear holes