mine are going in, in a few weeks (3.90) you will be so happy you got them. the reason ford doesnt make them is that they are so close to 4.10s its not worth it to them but a lot more are going that route now i wont be surprise if ford makes them soon. i have an auto and do 60-70 miles a day all highway and i chose the 3.90s. its a nice gear and at 70 miles per hour on my auto the car will be at 2500 rpm`s.
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