Glad your back at it. If it's going to be a regular driver, I don't think I would want anything over 3.55 without an overdrive trans. I have 3.23 in my T/A and the motor hums pretty fast going down the interstate but not too bad. I have a buddy that put 3.73 in his Camaro and he didn't like them because of how fast the engine was always running. I don't have any experience installing posi.