Check some previous posts about these. Some good comments

In my opinion with daily driven I'd get 3.73's. A lot of power hungry guys will tell yah 4.10's

Nothing wrong with that, just be prepared to combat the traction in some ways. Anyhow, good news,
Pro 5.0 3.90 gears Good luck man.
One other thing tireburner pointed out...where are the 3.90 speedo gear lol?
