I would talk to your competitors. Notwithstanding the above, I think the initial reaction you are going to get from most every IT racer other than those on this board is that they are illegal.

For what it is worth, hubs and bearings are a serious issue on my car as well. Bearings get changed pretty much every weekend. Hubs once a year. My wear issue is unusual, I think anway, the hub wears and I get lots of play on the axle. New bearings and races don't help.

You can argue about technical legality but I think the clear intent here is that you use stock hubs, or an "OEM" equivalent replacement that you get at an Autozone. It was not the intent to be able to and whittle a stronger hub from a hunk of metal, but so it goes.
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I hear ya on all accounts.
on the s2k the hubs need a annual replacement. so at worst case I would be looking at changing them half way through the season. not too big of a deal....