I like the dog bone conversion idea. Less things to go wrong. One thing I forgot about though is that I'm using Nitro Rustler rear A arms (which are shorter) and the Powerline aluminum 4-tec carriers. The parts I had previously bought were the axle that was mentioned in the other thread, and the dogbone I bought was a 6x83mm http://www2.towerhobbies.com/cgi-bin...72&FVPROFIL=++ I hope these dogbones are about right length for the nitro rustler A arms? They fit the axle. Then all I would need is the proper drive cups.