I just replaced all of my lug nuts as the old ones were boogered up from someone using the wrong size socket on them. (1 1/8 instead of 27mm)
I got them from LA Wheel and Tire. They also have the RRC solid lug nuts. They arrived quickly, but 4 of the 20 had damaged covers. I sent them an email and they sent out 4 new ones.
LN3550F is the stock D90 style
LN3550 is the solid RRC style