So my Xbox 360 got the old RROD a few weeks back, and in the process of fixing it I stripped one of the torx screws holding in the x clamps, so screw that. Anyway, I was buying a new console on Ebay, and one going for cheap says it does not have RROD, but it does have a broken disc drive. The disc drive on my old console that RROD'd still works, and I believe I can just replace the broken disc drive in the ebay console with the working one in my RROD console. 
 
That will work, right?

So my Xbox 360 got the old RROD a few weeks back, and in the process of fixing it I stripped one of the torx screws holding in the x clamps, so screw that. Anyway, I was buying a new console on Ebay, and one going for cheap says it does not have RROD, but it does have a broken disc drive. The disc drive on my old console that RROD'd still works, and I believe I can just replace the broken disc drive in the ebay console with the working one in my RROD console. 
 
That will work, right?

No.  The drives are tied to the consoles so each drive only works with their respective consoles.

 @Jiggah: So there is absolutely no way to make a disc drive from one 360 work on another 360?