KD80 M vs. KD100 Engine.
 

Hi folks.

I picked up a project late 70s KH100 turned into cafe racer about a month ago. The problem was the engine and I am currently looking for a new bottom end. (I have the top end parts with new piston and rings.

I've located a KD80 engine on ebay that's complete with a top end for a decent price. I'm wondering if this ending will fit with my bike and if any of the parts may be interchangeable. Like could I swap my KE100 engine head onto the KD80 engine?

Any help is much appreciated. Thank you!!!