Specifics are always important. I've often seen this sentiment, but when I went to read the information that was claimed to back it up, there wasn't much there that backed up their specific claims, such that they existed.
With respect to personality clashes: I don't really give a tick. Is the engineering OK or not for the engine being evaluated?
By the way, there are some others who are using the Honda Fit engine block as a base for an aircraft engine. Such as: http://www.raven-rotor.com
