36mm socket on a 3/4" impact. Find some way to hold the crank, either at the vibration dampener or at the flex plate. I've used the factory tool, a drift will also do the trick. Then walk the hub off -- it's keyed on the crank, and the woodruff can sometimes jam up.

By the way, saw you won those JE pistons -- are they going into the M106? I was going to buy them for that purpose, but decided the lower compression stocks would be better in the long run.

best, whit