[T Creighton]

Hi Darryl,
It is different to the truck ones in that the yoke and shaft are tapered and keyed, not splined. My flange would not definitely not suit.
The taper should be easier to move than rusted-in splines although the key and keyway are probably the problem.
Can you get a drift along the key way to give the key a whack.
Do you have a Picavant hydraulic puller? That and more heat than a propane torch.
Cheers, Terry