I don't like the indent on the back of the 4's. Try photoshopping them on the truck. I think it would help to see it better.
Ok Tab's and gang I took the time to out my awesome ms paint skills and created this. What you all think about this one?
Why don't you make an STx4 (Storm Trooper 4x4) or something along that lines? I was trying to find a good picture of a Tie Fighter, and use the wings as the X but this is all I could come up w/. Sorry its not immaculate like all you PhotoShop pro's, but its all I could do in Paint at work.
Cool idea, but dont really like it. Like someone else said, it might look better if the 4s were blocky