The calibration software can actually do a range of things, including running a lengthy series of tests on the machine — along with calibrating the processors. It is likely something you need in your situation now, never mind if and when you transplant a logic board.
If you google "ASD 2.5.8", it will come. As far as I know, that version should work with all dual G5 machines, or at least, it certainly does up to the middle of the series (I have used it on my dual G5s). It's just the standard service tool of the time for a range of hardware, and is not ultra-specific to a particular G5.
If you google "ASD 2.5.8", it will come. As far as I know, that version should work with all dual G5 machines, or at least, it certainly does up to the middle of the series (I have used it on my dual G5s). It's just the standard service tool of the time for a range of hardware, and is not ultra-specific to a particular G5.