How would I make a mod that acts like a wheel adapter/spacer? I would like to be able to attach it as wheel and then attach a wheel on the other side of it. it would have adjustable wheel spacing (with a tuning slider) and can convert say a 4 lug hub to a 5 lug. I want to make it as a proof of concept for now. If it works, I want to know how to model it to stretch the adapter model with the spacing the user sets.