I have center caps, if its legal thats what I will run with. I know that shields I seen normally have just one bolt in the center. I dont think you are allow to mount to any of the orig. axle bolts. Now that I been looking at alot of pics of trucks with them, most have rockwell axles that have the shields. Now I just need a transmission blanket, only found one brand for the 47RH. And thats $450