I agree, why bother? Other than not having iPod compatibility, you couldn't really complain about the McIntosh head unit.
For those reading this thread at a later date, avgeek's method can be found here. Just wondering, do all the McIntosh headunits have the same port connecter, even those without a CD changer installed? I just noticed that the image in that thread has a circle connector, but the Radio Waves connector seems to be square:
vs
I want to get someone to install it for me, so I don't really want to have to have it pulled out twice to check. My McIntosh unit is the one with the MiniDisk and CD player built-in.