I am way late on the wheel nut situation but these get my vote purely because I will have them too...and they look schweeeet.

$330 from Wei @ Vision R
Kyoei Project Kics Revo R40's (Neochrome for +15HP)




Or you can get these for a little less $199, again from Vision R
Kyoei Project Kics Heptagon Caliber (Titanium coating for +5HP)