I just put a bakflip on my new 07. 5 it is a little snug (front to back) with the line-x sprayed in but otherwise is pretty sweet. good things about it are
1. have access to the entire bed without removing it from the truck. 2. sits flush with bed rails. 3. with a tailgate lock (recommend the bully i dont like my pop&lock) the cover/bed is secure. 4. pretty easy install. 5. quality is good. only negitives are. 1. instuctions/picks could be better. 2. the company does answer the phone but getting to the tech guy is the hard part. refer to #1. otherwise a nice cover and so far so good.
AZ truck parts has a good price and it was shipped from BAK directly.
chris