My 2c: Reconsider getting them at all. My 4R came without boards or bars and I like it that way. I used to have a 99 Grand Cherokee and made the mistake of putting on a set of nerfs. I found that they got in the way, affected ground clearance and in wet weather, they were just another thing to get my pants dirty on because you had to make extra effort to step AWAY from the stupid things when entering or exiting the vehicle. Mine were made by Westin... and they were nice and easy to install. But like I said, they were more trouble than they were worth in my opinion.