they are pretty dodgy, i wouldn't buy any part unless i was absolutley certain the part has no defect apart from the obvious. Unless you know everything about the part.
I'd buy a panel from them and thats about it.
I was out there with a mate who was looking for engines and we saw the guys out the back, start a 13b turbo half cut and within 5 seconds revved it over the 8500 rpm mark with no water in it.
My mate got it on digital camera and it is the funiest thing you've ever seen!!! Bogan's *ucking engines!