After years, I am now serious about changing out my 3.23 rear for a 3.73 or 3.91. I have a gen III 5.7 hemi (360 HP @ 5400 rpm/360 ft-lbs of torque @ 4200 rpm) and five speed with 3.27, 1.98, 1.34, 1, and .68 gear ratios. My rear tires are 26.7 inches tall. I drive the car on the street and...