For what it´s worth: the step on the KB356 can be milled so that closed chamber heads / .039" head gaskets could be used. Did that before, still got the fixture to clamp the pistons in a lathe. I´d be more concerned about the eagle crank - is it a cast one? i´ve seen some broken ones. The rods would not be my first choice....but they work in mild applications.
It all comes down to how good this deal really is.
Michael
