Well we can ship everything from the US, it'll just cost extra and I would keep the original, even if it is just for the size of it
You might consider installing a rear axle of a daf 600/800/45/55 truck. These have the same dimensions as the rear axle of my truck and might fit yours to. Better axle ratio for the diesel engine.
'52 Cadillac Coupe de Ville (to be restored) '56 GMC 450 (work in progress) '79 GMC C15 (fully restored)
and I would keep the original, even if it is just for the size of it 