Brushless Buggy ?

Where are these "hardened pinions" everyone keeps talking about? I've thought of going to an all metal geared driveline after killing spurs in my Ofna 9.5, but know that the stainless ones Mike sells would die if they were used with the hardened steel spurs Ofna makes.

Oh, and Daf, I know there's different options for different people......an offset diff would actually work a bit better in some cases I bet.