svtjeff is correct. Terry Haines confirmed that the UIMs from all model year SVTs are indeed the same. Ford changed the part #s because...who knows.
The 5 extra horsepower is a result of:
- later heads being ported, early not
- later heads have a revised/added intake port hone
- .25 compression ratio increase in later years
I never claimed to be an "expert" - I am clearly not. I simply stated that you needed to provide some kind of proof to dispel this long thought to be fact or quit posting - it was quickly turning into a flame war.
Learn something new every day - good info jeff.
