Differential Upgrade List

[HuGo]

Im trying to make this a sticky. Not just for me, but for everyone else (first timers, uncertain people who have question). Something like the FI Q&A thread but for LSD Diffs. Here's something i think its a great start. So lets all contribute and post some good stuff.

Lets start by making a list of what differentials will fit on the TI for sure. Example, what gear ratio it is (3.45lsd, 3.73lsd etc), what car it came from, will the differential fit right on or will there be a slight modification and if so what kind/ what to do. Also a list what will not fit (maybe like an overall for sure on what car/series, ex e34 or something)

So heres kinda an example (just using random numbers and makes)
3.68 e30
2.99 e30
4.12 e46
3.67 e36
3.31 e90
3.44 e92 (needs this and that changed)

Edit: Feel free to modify this post