RE: Tamiya Wild One Build/Review
I quite enjoyed going through your build thread on the wild one, one of my fav too. I was instantly hooked on it cause of the rear shocks, so scale looking and functions like the real thing. Although I did not buy the the kit, I did buy the the rear shocks for the Wild one 2012 model from ebay. I am going to use it in the future.
Looks like you will have very little space to work with in making a a more robust platform for the rear arm pivot braces. It should not have broken like that but uppon close inspection you can point out what will fail after a bit of bashing. I would recomand fixing the chassis with aluminum or carbon fiber.
It could be that your son's FAV chassis material is made up of tougher plastic.
I think the reason why it broke from there is cause of the chassis not being renforced by beng a bit thicker where the pivot mount are and the fact that the rear shocks are really hard, making them act as pivot points rather than the actual pivot point of the arm and stressing out the chassis part and cracking it.
See if the rear shocks of the FAV has the same stiffness as the Wild one's