will a 4x4 air dam with the factory tow hook cutouts directly fit onto a bumper with a 2wd style air dam

 

I believe I already answered another thread you started with the exact question.
It you get the correct year model one, then it'll fit. 04-05 and 06-08 are different from each other and may not be a direct replacement. Get the correct one and you won't have any issues.