Search the Bobcat Forum for "Ford 1.6". There are several posts on here about parts for it.
It is a Ford Kent engine. Used in, what I have read, the European Ford Cortina, Escort and Pinto. One post on the forum mentions that the Ford Fiesta head gasket is the same.
I used to have a 742 with that engine converted to propane. I've seemed to have misplaced all the info that I had accumulated on it. I will keep looking.