One word of warning on the AOD swap, you'll need a different transmission cross member for it to fit right. Frank Cooper (71gold) used to make them, but its been a while since I purchased mine and don't know if he does anymore. I can tell you they are good, quality pieces as I have one in my Comet GT project. You also might want to check out this thread: mmb.maverick.to/showthread.php?t=77477 and mmb.maverick.to/showthread.php?t=27292 Hope this helps, -Scott H.
Is the difference something one could rectify with shop tools on the c4 cross member for the v8? I have torch, welder, drill press and medium small Chinese lathe.