Fiesta block questions

There is a 78 Ford Fiesta for sale in my area $100. I have a Zink Z-10 with lots of hard hours on the engine and have read in this form that the fiesta blocks are suitable/ legal for FF.

What years fiesta blocks can be used?
What identification marks can be do I look for?
Is this block dimensionally the same as the "Kent"?
Is this block a direct "bolt in" to my Zink or will I need to mod. engine mounts etc.?

Also are any other parts from this engine adaptable as cores to FF, Crank, Rods, Head, Flywheel?

Thanks. J