I've already swapped out RAM, video card and CPU with wifey's machine.
I bought all the bits for both - and they are all interchangeable (with the exception of the power supplies - as mine came already installed in the case).
The *only* bit that has to be tested in another way (but I don't know what that will be) is the mobo.
I don't have the heart, or the correct wife, to strip both machines at the same time and rebuild from zero - especially with the threat of her inheriting the faulty component.
I'll buy another mobo if I can't get them to cross ship another one on an RMA.
Everything is so *backed up* and protected that it's now more of an intriguing challenge than a disaster.