B2L2

Lik, boring out wheel's center is not rocket science.  Bring them to the wheel repair shops (at least two reputable shops here) and they should able to do that.

I had research that before (to fit Miata wheels on Honda).  Many people did that and some even DIY using a hand drill.  You wouldn't need to enlarge the whole wheel center.  You just need to drill enough out to clear the hub.  That wouldn't weaken the wheel's strength.

For my case, a thin wheel spacer already make it works and I didn't bore out my wheels.