Mutual Negative Quines
Python, 97x2 + 2 = 196

Not a great solution to start off, but at least it works (I think).

c='o=1-%d;print("%%97s\\n%%97s"%%("#","c=%%r;exec(c%%%%%%d)\\40"%%(c,o),"#")[o:][:2])';exec(c%1) 
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Output:

                                                                                                #
c='o=1-%d;print("%%97s\\n%%97s"%%("#","c=%%r;exec(c%%%%%%d)\\40"%%(c,o),"#")[o:][:2])';exec(c%0)