First off, if you plan to install a cold air intake, then I would suggest doing both at the same time. I say this because it will save you a lot of time. Removing one side of my Injen intake and then reinstalling it was a pain in the butt. This holds true if you're looking at the Injen, K&N, S&B, and AFE intake. Replacement box style intakes won't be affected.
Here's a few things a I noticed after installing these charge pipes.
Aftermarket Turbosmart BOV (VTA model) makes a higher-pitched noise. Sounds good -more pronounced and aggressive.
I can feel the power increase. It's not a ton, but it's definitely noticeable. I can now spin the tires flooring it from a 10-20 MPH with traction control off. That has never happened previously. Keep in mind, I'm FBO and ZFG Racing E85 tuned. I can't speak for the power increase on a stock 2.7L, but I imagine you'll notice more power and improved throttle response.
The T-bolt clamp design isn't the most aesthetically pleasing, but they work great and should hold better than a typical worm clamp.
Overall, I'm very happy with the charge pipes and glad I installed them on my Bronco.