Flashing a 7800 GTX 256MB PCI-E to PPC Quadro 4500 possible?

[icyderguru]

Hello guys,

 

i got a little Problem.

 

I am getting a Quad Powermac but there is only a Geforce 6600 in it.

 

So i thought about flashing my 7800 GTX to an PPC Quadro 4500.

 

Got the Rom from strangedogs, it is also a 64kb one and the 7800 GTX is identical to the PPC Quadro 4500 as far is i know.

 

Any advice or maybe someone who already did it?

 

Thanks in advance

 

Steven