Now that I've installed the Radix on my 5.3L I can see the shortcomings of my drivetrain. I've got the stock 4L60E and 3.73 gears with 305/50-20's to the road. It's been suggested that if I don't like the sloppiness of the tranny I can get a Transgo shift kit (the 4L60E HD variety which comes with the Corvette servos). Does anyone have familiarity with this product? What exactly might it do for me? I've also been reading about torque converters here and elsewhere, wondering what an aftermarket TC would do. Any suggestions?