The Bradley tracks, wheels and sprocket are great for the toy, but the tracks are rubberband style. Since I want all metal on this project, I had no choice but to replace the sprocket too. The roadwheels should work, I just have not split them apart yet to get them mounted. I might just leave the PIII wheels for now until I can replace them with the metal ones from Germany. The Bradley and PIII roadwheels are exactly the same size. Hopefully I will get some project time tonight, I really want to get the suspension finished.