As you already mentioned, Headling, Hobao is virtually unknown in the U.S. let alone hard to get. Thank you for your suggestion though
I've read about the upcoming release of the DB01RRR on Tamiya Japan website but didn't know it has 12mm front hex. Thank you, JDM DOHC SiR. Guess I should let my buggy sit idle until the parts are available through Tamiya. I'm waiting for my Futaba MC 960 CR speedo anyway.