[Dinobyte]

Skip,

I would recommend the 3:46, since you have a 351, and I am assuming around 400hp. It won't be too low for driving on the freeway at 65, and will give your motor the torque equalizer advantage off the line. If you want to go gonzo, the 3:73 is the way to go.

With the LSD, you will notice chirp when going around tight corners, as both wheels will want to keep turning.

Cheers
Michael