He needs a BIX micro like he needs a hole in his head - unless space is a serious issue and you cannot do anything but 80mm, it is a bad choice.
The Dtek combo I recommended is the best option performance-wise. It comes already with the shroud and the barbs at the right sizes so it requires no personal handywork - if you can do that work yourself you can save some green here though by going with a chevette heatercore, like ILikeMy240sx suggested, as it's almost identical.