The ractive axle back requires a slight touch of modification to fit properly. Thats how all of them are. If you exchanged it, you would get something just like it back. Kind of sucks, i know, but it is the least expensive you will find and sounds pretty good.
The other bracket for your air intake goes into the MAF and down to a post right in front of your battery. If you are looking at your battery from the front of the car it is the post about an 1 or so out from the left front corner. Putting your other bracket here will keep it from rubbing the master cylinder