[nrmcj]

basically it's the same thing as a fullsize wheelmod and a smallsize at the same time.

1. twist the rear wheels off of the pullback. just twist, they'll come off

2. cut up the pullback knuckles so you can take out the front wheels with the pin undamaged

3. mount the wheels on a BCG axle, with the correct spacing

4. pull the front wheels out of the bit char-g knuckles, and put the pullback wheels in. you will need to make spacers to put between the wheels and knuckle.

5. put everything back together and you're done.