what is a K frame

Talking to local people bout the v8 to slant swap in a '64 dart. I have heard here it requires new motor mounts.. (makes sense) but a guy here says somethign about 'changing K frame'.

Is that part of the deal?

had another question re dash -- if you changed a PB auto to manual, you'd still have the far left dash panel w/ holes in it, The dash is of course welded in, correct, but coudl that auto trans panel be removed and then replaced by the one that just has the lights and wipers?