In short, it felt good. 8) lol When I first got it together I just cruised for a few miles to make sure I set everything up right. Nothing was making any bad noises so I put it in first and punched it from a slow roll, and man did that feel good. I went from 2.55s to 3.73s and as far as first impressions it made a world of difference. I still don't have the speedo re-calibrated so I don't have any solid numbers to give. As far as the actual posi, a couple days later I did my first burnout with it. With both wheels breaking traction it really changes how the car behaves. Way easier to swing the back end so you have to pay more attention to your steering wheel input than with a peg-leg. It's good stuff and something new to play with.