I just finished installing the roof rack. It took about 2 hours. My hacksaw's blade is very dull...I would suggest buying a new blade for your saw before attempting the install. I did accomplish to make one mistake...whether or not it is a big one...only time will tell. I was using a torque wrench to finalize the install and I over torqued one of the screws connected to the roof. So out of 12 possible screws, only 11 are secure on the roof rack. Luckily it did not involve any of the corner screws(8) just one of the center(4) ones. I would rate the install as easy to moderate. Beware of over torquing the screws. Hope this helps. BTW, I checked for noise at 50 mph and bad. I will try the highway tomorrow...that is the true test.