It's a Mk4 R32 Wavetrac that they modify along with the diff housing. You can send them your diff and they'll modify it, but they're in Austria and the turnaround time on that is ridiculous, so I paid a core charge to get an already-built diff in half the time, and will send mine back to them when the job is done.Ooooooooh $$$$$$$ but having front and rear LSDs will be phenomenal. Are they selling the diff and bolt-in ring gear or do you have to send your rear diff in or?
For anyone curious, the total for the order was €3916.66 including €291.66 shipping and €750 core charge. At today's exchange rate, that's $4655.73 Freedombux. I'm only doing it because I need a rear diff anyway, and I know I'm keeping the car for a long time to come.