KraZee,
I believe it's been done anyway. There is very little left in this world that hasn't been done. But if you do go ahead and do it, you will be part of a very 'exclusive club' of V8 300Z cars. Do it for the enjoyment, no necessarily for glory as I can guarantee you, when you are done and the 'cheers' have subsided, you will be left with an empty feeling. If you do it for yourself, the sense of accomplishment will fill your heart and make you happy. As with anything in life, do it for yourself, not for anyone else.
Sorry to get so metaphysical and philosophical.
Tim