i never heard of 3.90 but let me know when you find some.

i got a FTW member who might send me some 3.55s if they are in good condiction when they do their swap.

i got a guy at work who will do the labor too. but im not sure what i am gonna do yet. gears gotta be done right the first time.

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1999 F-150 AirRaid, 4.10 gears, tint, superchip, see my gallery for more.