You have to use stock parts or their aftermarket identical equivalents.

What makes the new hub stronger and more durable the the stock one? That -- whatever it is - is what makes this illegal.

I saw a rear hub break on a 325 in a 100 mph corner at Roebling. Bad accident. Certainly want to avoid that, but the way we have to do it in IT is to simply replace hubs on a frequent basis if they are a known weak oint.