the credit card sounds strong but doesnt it stiffen the front suspension a bit for the size of the car, also how is everybody breaking those? there quite flexable which seems like it would flex in a hard enough wreck.
i have jumped my micro-t off a two foot brick wall and the rear hub broke but i fiked it with super glue and that held up till i could get the part and i have jumped it plenty since then and nothing else has broken