What's worse than getting mad that your expensive wide body kit arrived from the manufacture defective? Spending hours cussing up a storm trying to make it fit? Start bashing the manufacture to the point where you email them to give them a piece of your mind, just to find out that you have not only voided your warranty trying to install it yourself but the wide body kit wasn't defective, it just wasn't being installed correctly! Now you're stuck with a perfectly good product that you broke.
Save yourself the headache and leave it to the professionals!!