I haven't posted here in a long while, but as to how i see it these guys than went watercooled should have kept it in the family, by this i mean going waterboxer. My friend here in jamaica went watercooled sometime ago and everyone here said he couldn't do it it wouldn't work but i was surprised to see that the engine fit better than the original 1600 aircooled engine with lots of room to spare. This was a direct bolt in a fare. Well just look at this video of a 2.8ltr waterboxer with 850whp.
http://au.youtube.com/watch?v=CJ_upA5xLdM