Damaged re cars or spares (SG8)

I’m looking for damaged RC cars or just spares. I’m currently teaching my boys how to dismantle and rebuild these kind of items for a new hobby of theirs instead of their gadgets but I only have a chassis shell and a hand controller. Ideally I need then nitro engine a receiver servos But if anyone’s got a whole car which is no good which I can use parts off them thst be really handy, thank you.