I want to re-gear my '06 5.4L from the stock (H9 Axle Code) 3.55 gears to 4.10's..I'm running 33's right now, I'm just looking for a little more power and better fuel economy with the bigger tires. I need some advice before I pull the trigger on doing this..

1) Is there anything from people who have done this that I need to worry about? friction modifier, break in period, etc.?

2) what brand gears are people running? I found Ford Racing gears on Summit for a decent price

3) Are there any special tools I'll need or anything I should be warned about before I tear into this in the garage?

Thanks in advance guys.