looking for a bit of wisdom,
i have to do a technical project this year for college,
so ive decided that I want to fit my e36 318is (m44) with an lsd, (I REALLY JUST WANT TO GO SIDEWAYS)

have looked into small cases and were told they can break after too much abuse...

inquired about a medium case diff from an m3 and was told it was complicated but from what ive read this seems to be what most people go for as it fits in the rear subframe, 3.15 ratio,

i was then told the best solution for me was to buy a complete m3 evo rear end (450pound delivered from up north) 2.93 ratio,

im told the medium case will decrease acceleration but what about the large case evo one?

any ideas on what should i go for and how to go about doing it?

Thanks in advance!