Not sure which came first, blown coolant out-pipe from the head, blown head gasket or failed water pump. I do know that the result was only a warped head and a seized piston though, far less damage than I expected. Owner said he saw temp gauge reading higher then normal, then miles down the highway later it was fully at the top of the temp scale, then a few miles later ot was flashing a warning and radically loosing power? At this point it was ridden about 2 miles further yet to a safe place to get off the highway. I assume coolant/head temps went over 250-300f.
It will be very interesting to see just what can be had of a creative mix of all OEM parts. His bike should run pretty shit-hot, with all the civility of stock and getting really good fuel efficiency too, while staying whisper quiet.
Fun project. I cannot for your new Malossi cyli der head to arrive. Of course it will get the normal supersport porting job before final assembly. For your bike I have been looking at carb options in case we find that the stock carb is limiting the fun factor!