Those M600 look good but I'm moving to a 17" wheel next for a drag setup. Something like Forgestar F14 drag pack. I don't see any 17"s on the MMR site.Not sure about a discount, but MRR has a pretty sweet deal right now on the M600s. Trying to find some spare funds, but I've got a more pressing issue with a foundation leak right now. Hopefully the fix won't break the bank and I can snag a set before they go off sale