Which Gear?

I've got 3.91's in my duster and they scream on the highway,fortunately it very rarely see the highway,but they're and excellent street/strip gear..i'd go with the 3.55's if i were you and your planning on a lot of highway driving,my buddy has a set in his '68 dart with a crate 360 that has run a best of 12.60 and a consistent 13.0 car with lots of highway driving... :thumbup: