Today I made some nice progress on the drum hub. It took me a while to find the solution.Make a whole new aluminium hub and have a spline bushing and brake line made to fit, or use the old drum hub and extend it.
I opted for the second because making a new from scratch will take up too much time and for me it's about building it to drive it.
Left the shaved drum hub, right the aluminum part with a 20 degree angle for centre fitting.
I bolted both parts together and permanently Loctited 638 them together four countersunk bolts
on the axle I turned it with the right dimensions. The total drum hub needs a 76mm width to take the 225-10 rim
Still have to drill the bolt holes and make an insert in the centre to fit the right swing arm.