I used the Slash 4x4 bumper because the two front screws matched perfect,I removed the stock bumper and added longer screws. Still might drill and tap two more screws to make it bulletproof.....

Next is the Proline Protrack wheels they are neg.10* and put you at the legal with.
Teckno has the wheel hexes 12 mm no mod needed:
http://www.impaktrc.com/product_info...cb7f0744b5ad5c