Word back from Dave Gomberg is that the " same material" requirement in IT could possibly be a sticking point, but he's not sure, so has turned the question over to the IT experts.

In other classes (I have a lot of experience in the formula classes, but not here), 'Like Material" would mean that a "steel" part can be replaced with another "steel" part, but not with cast iron, titanium, plastic, etc.

My own opinion is that as long as the OEM hubs are "steel" and the replacement hubs are "steel" then they would be OK, but I have no experience in the way the rules in IT are interpreted. Hopefully he will get an answer back shortly, and when he does, I'll pass it along.