im pretty sure it will fit. and im also pretty sure you dont need to take off the bumper. i believe it comes out around the fender area not the bumper.. i could be wrong tho. lets see what everyone else says.
i have the injen SRI, and i took out the battery. made the instalation like 10X easier. you gotta unhook the battery anyway, so why not take it out? lol. i didnt have to take the headlight out, but thats prob the difference between SRI and CAI installation.