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To fit the Landcruiser front stubs first I got some round bits of 16mm plate to make the flanges. A local engineering firm had a big pile of different size cutouts from making pipe flanges so they were cheap. Then the problem is that there is a bulge on the back of the stub that usually sits inside the knuckle, so you can't just bolt the stub to a flat flange. I machined a little bit off the back of the stub but got most of the clearance by machining a dish in the flange (that's why it's so thick) - super simple if you have access to a lathe. Without a lathe it would be easy enough to cut out some spacers to pack the back of the stub off the mounting flange, but probably not quite as strong. Then I just clamped the stub on my flange, drilled the holes & got some HT bolts.
A mate did his another way - he got some solid stubs machined up to fit inside the tube of the 'Cruiser stubs, cut the flanges off the 'Cruiser stubs & welded in the solid stubs which were then (I think) welded into an RHS axle. Alternately you could get a full width bit of solid bar for the axle & do as above.
His setup would be lighter & just as strong but not as easy to swap stubs as my setup & my flanges also made it real easy to get the wheels paralell & concentric on the axle.
Cheers
The cruiser bearings are massive compared with those ones on TM too. 
