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I emailed TomZ to find out what they say. I'll let you all know what they say.
I've been in contact with them via pm's for over a week now about this. I asked about the lip and TC replied saying their 11" zr1s didn't have the wider lip, so this is what threw me off. I pm'd them back last thursday asking for pictures of their 17x11's to verify the lip size and that they were OE concepts wheels....pm is still unread.