Gday all I'm new to the forum, just wondering what diffs I can put into my ef if I can't find a el ef diff what other models can work?

You can have single spinner, LSD, or you can fit a locker.

Ratios: 3.08:1. 3.23:1, 3.45:1, 3.7:1, 3.9:1, 4.11:1.

You can use diff housing from an EB/ED, but you will need to change the brake set up.