We have got all kinds of nut covers. I got a whole bunch of the spikes that are hard or were hard to find. Pointed ones, rounded ones, long-pointed-sharpe ones, you name it I got it...
Silver350crew they are the plastic ones and they are $1.40 each. I havent seen the aluminum ones, but I have thought time and time again about making some.
Mark that wheel is a 20x8.5 w/4" backspacing and it is a Devious Holeshot wheel and we had an 18/20 combo made for the Mazda Sundowner that I am building for a buddy. I can get you a set made how ever you want them and I think they are like 2gs a set but I will have to call and make sure.