yeah...though i haven't seen anything official that said they were in fact identical, the only change anyone seems to mention is the first body change to the 05/06. should be good, unless somethin under the bumper is different somehow.
I have the F2 widebody kit on my '06. It took a lot of modifications to get it to fit. Another thing that they have changed was the suspension. I have had a hard time finding lowering springs, but eibach just came out with some for the 06.
Things are slowly trickling out for the 06, just too bad I am not a very patient person. 
05/06 people might get the modding shaft, isn't 07 getting a body change? That short lifespan might get a skipped generation, from my newbie, non-economist, non-manufacturer eyes. But then again, where there's a market, I'm sure there will be people to sell the kits...