My experience is mostly with 94-95 pcm's
but
I do know enough about Fox pcm's to say ......
The benefits of 94-95 over Fox are not so many that it is all that great
as I see it.
Now ... when it comes to a pcm that is 14 years newer
Well ... You just gotta know a lot of improvements have been made
I really know nothing about 96 and up pcm's other than just genreal info
but
My gut says the difference would be much greater
and
The benefits over the Fox would be more as well
Seems to me ... more trouble

than it would be worth
Like was said ... a GOOD tuner .........
should be able to make a Fox, 94-95, or later model pcm work with
whatever hot rod parts one would use
Grady