Can anyone with a Wilwood kit explain this

I called Wilwood and the sales associate said the kit is designed to work with OE equipment so go for it. He didn't think there would be any issues. I guess I can put a 1/2" bolt through the hole and put a lug nut on it and see if it even seats very well. I am certainly not going to upgrade my wheels to large bolt pattern and still use this kit. It wouldn't make any sense.