autocadsteve: if you do in fact do the losi spindle mod you would want the standard width losi wheel at least for the narrow proline 8175 tire. After taking a look at the track that you run on, i would consider running a wider front tire like the proline 8176, it looks a little loamy for narrow fronts, however i think the four wheel front wheel will be too wide, you can run the losi wheels on the b44 hex if you put some shims thin cvd shims between the wheel and hex, i did this on my xxx-4.