I know the radiator fits...but no one has posted clear pics of the normal setup (seeing as POPS rewelded his). Even so, you only posted mounted photos hehe...you didn't put the fan shroud on or fan clutch ;) Though we know THOSE fit.
Snives assures me that the Howe-style aluminum pipe will do the trick without welding...so I guess it wont be an issue. But STILL...no one has documented it =)
The world's two biggest mysteries: The meaning of life and fitting the Howe radiator into the Z...