Swapping91 hi ace Van wheel assembly to Toyota wish wheel

Swapping91 hi ace Van wheel assembly to Toyota wish wheel Img20213

Swapping91 hi ace Van wheel assembly to Toyota wish wheel Img20215

I have 91 SWB hi ace van. 5x114.3.
65 mm centre to centre (stud)

Want to swap to a Toyota wish wheel 10 mm smaller. 55mm centre to centre (stud)

How do I do this?
Is this change straight forward or not.

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