to adapt to timkens, assuming it hasn't been done already
simply requires off the shelf shim spacers for the bearing cups
once you have done that
then all you need to do is match up suitable metric cones, to the cup that will now fit in the frame, having compatible "K" factors
www.tinken.com
I don't have the bearing numbers to do that conversion, never thought to save them or write them down
but I do have the shims from a batch I had CNC'd years ago
I personally can't stand building a bike with loose ball roller bearings
real pita