Lookin for a specific truck on here....
Technical Article Contributor
Joined: Mar 2005
Posts: 4,387
Likes: 9
From: OH-IO
When you got factory installed 20's on an 07 FX4, you got 3.55LS unless the dealer knew about the special order deal to get you 3.73. Later in the 07 model year you could also special order 4.10's. There was a guy from tenn who had an 07 with factory 20's and 4.10's and it was built like that, he even posted the window sticker to prove it.
Senior Member
Joined: Nov 2008
Posts: 1,788
Likes: 5
From: Alabama
When you got factory installed 20's on an 07 FX4, you got 3.55LS unless the dealer knew about the special order deal to get you 3.73. Later in the 07 model year you could also special order 4.10's. There was a guy from tenn who had an 07 with factory 20's and 4.10's and it was built like that, he even posted the window sticker to prove it.
