1969 Fiat 850 Spider. (This one is actually a later year)(same color as mine,though)
It would overheat and blow the head gasket every 2-3 months. It got to the point where I could pull the head, ride my bike down to the machine shop to get it surfaced and pick up a gasket, ride back (stopping at Cecil's for a choco malt) and install the head and new gasket in an hour and a half.
Jim