Bullitt Wheels - How to open up bore?

How brave are you?
I ran into a similar problem years ago with BBS wheels with a too small center bore for my car.
Careful measuring and math and a rabbet bit (a good quality one from Lee Valley) and a 5/8 hp router and I opened up the center bore to almost perfectly match the recipients bore.
I will say this-I was shaking like a dog pooping razor blades but the bit cut the aluminum like nothing.

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