Nice effort! Will definatly print these if/when we get the game. I have some (very minor) issues though:

Combat Bumper: What's with the ó between the dice?
Lateral Circular Saw: Should perhaps be a bit clearer that the red die is in addition.

On Board Computer - Direction Points to Steering Points

Machinegun - change to Machine gun. Also the wording is a little strange with the 4 dice minus... etc etc. It would be easier to understand if you were to say the following:

Fires forwards.
1 box roll 3 dice
2 boxes roll 2 dice
3 boxes roll 1 dice

Each 1 or 2 causes the opponent to lose a Structure point.

Flamethrower - change to Flamer. Change wording to same as Machine gun.

Side bumper - Change "Activate during a Lateral Ramming' to "Activate during a Lateral Ram'

Circular Saw - Change "Activate during a Lateral Ramming' to "Activate during a Lateral Ram' and 'roll additionally a red die' to 'roll an additional red die'