Managed to model Torsen Limited Slip Differential small enough to fit Truggy with only few parts requiring to change. Those will be: Central Diff Cases and Top Decks and Diff itself of course :) N24 D12, N16 D16 and N8 D8 parts printed at 0.1mm, other at 0.2mm. For central diff I used PETG. Didn't managed to capture outdoor run, but it runs brutally :) I could claim that there is a difference between open diff and torsen. One issue tho, sometimes having issues with turn radius. Overall I'm happy with result. Now it way easier to control it in straight line with full speed on slippy road while with open diff I only just spin out constantly.
After 5min of torture, broke front diff, but Truggy still runs with rear wheels because central diff is LSD :)
UPDATE: for pins I bought 3mm diameter nails from local depo and cut them to 23mm lenght.
UPDATE: Added STEP files
Designed using OnShape.