I am thinking about swapping from a 3.55 to a 3.08 gear set. Anyone running this set up? I have a 69 with a 454 around 450-500 horsepower 4 speed car. With 27 inch tires, car is not too friendly on the highway. Has all kinds of low end now. Its a sit and spin. I do not want to lose all of the low end. What do you think. If it matters I am a cruiser not a racer.