New life for an old 340 (stock stroke)

What exactly do you have to "butcher" on a 340 block when you put a stroker crank in it?
I never got that ether. Also, “Save the 340 block because it’s rare.” Even worse for me is “What’s the numbers on it?” On what I’m doing. Who cares? Of course with the reply of “Someone may be looking for it.” In which I don’t care and there really is no worry of that of someone looking for it.

Most 340 cars ether went big block or have been since crushed.