it is 10th the chassis is a scaled down version of the 8 and looks to be very good

Yes, a lighter car breaks less easily (2WD for example), but given a 4WD's ability to accelerate to warp speed on a 5m straight and the unability of human reflexes to keep it from hitting hard obstacles at such speeds... a bit of extra weight will reduce the inevitable evil of barriers :thumbsup:

Anyway, to be a bit more serious... many 4WDs break down (particularly indoors). 4WD suspension is constructed much like 2WD - and that unsurprisingly doesn't hold up anymore these days. And what's the problem with adding weight? I recall many drivers do that all the time, and that doesn't even help the strength of the car :lol: