WTB: GTX 460m/GTX 560m Need either for M17 R3 120hz

So here's the story. I've got an M17x R3 with the dreaded 8 beeps error. I received the system without the GPU or heatsink. There's not really a way of telling whether it's the 3D model or not without opening the screen, but I suspect it is as it gives me 8 beeps when it turns on. The LCD lights up leaving a black screen which further tells me that it's the 3D model. It outputs a black screen to a monitor, but the monitor is indeed receiving a signal. This further proves that it is the 3D...

WTB: GTX 460m/GTX 560m Need either for M17 R3 120hz