FYI,
Just to let everyone know I had vintage motorsports install a 3.64 LSD in my car during winter. Today was the 1st day to check it out. RPM went up as expected 750. This is a great improvement from the open rear with 3.15 gears. I got on it once to check my fuel problem and going into 2nd the rear kicked out for 5 feet.
This ratio will let me use 5th on the highway but also I can still cruise in 4th gear doing 50-60 without pushing the motor and 1st is not a waste of a gear.
tom