Which one is best for my 07 F150 extended cabw/5.4?

 

Hate to see you hangin', dude.

I don't have any idea, but I'll bet you can get all the suggestions you want in the '04 - '08 F150 forum.

Here's a link: 2004 - 2008 F150 - Ford Truck Enthusiasts Forums

 

You may have bought something already but I had an 06 F-150 that I put in a Banks 4" exaust system in and it sounded and looked awesome. The install was also a breeze. It used all factory mounting brakets or hangers.

Leon