YOU MUST HAVE RIGS OF RODS 0.38.33 TO USE THIS CAR. THIS CAR WILL NOT WORK IN AN OLDER VERSION OF ROR.
Here we go, another release. The usual drill - no ugly mods, this is still being worked on, etc.
Recommend you drive these on Muddy Russian Tracks by LJFHutch (MuddyRussianTracks_2.zip), amazing terrain.
And yes, they have locking diffs. You must have .38.33 to use the Zeta. Let me know if you find any problems.