One of Rob's finest mods! When he did mine, his requirements were the boa (axle snapped, or not...but more often not, the not. Follow that?!), the tenner or so (memory not that pinpoint!), and here's the crux, a doner peregrine 10 mm sealed axle for him to machine to do the conversion. He provided the sealed bearings, I think. Cos a hub bearing had too big an outside diameter, and a skate bearing too small an inside diameter.
And then, yeah, ACS did a shit ass coarser thread unsealed version. Just in time for the bottom to drop out the caliper brake market, ha ha! Maybe ACS will make a miraculous come back some day, odysseyesque . . . then again, maybe not.
Had a quick rummage in the garage but couldn't turn it up, cool if I do though, cos I run Fit blades on my bike so if I need a front brake that bad boy will bolt straight on! Sorted.