if your willing to go and change everything, you might as well drop in a V8...i'm sure you could find a wrecked GT at some junkyard and take that engine...i know around here, there's several wrecked fox bodies with 5.0's in them. That would be your best bet...if you replace the 6, why put in another 6 unless you'd rather have that
I'd advise you check for a used 5.0 or even a 4.6
