Suspension 6 inch and my speedo is re programmed so it is correct and it does have 3:42. It feels similar to like if I were to put it in manual mode and down shift it fast like the Rpms shoot up faster and kinda jolts me forward when I'm on the breaks. And when I'm taking off at a stop it feels sluggish as if it is running out of gas when it isn't. It hasn't always been like this it's getting worse as time goes on but it seems to kinda have a temporary fix when I put in fuel system cleaner but barely much difference im not sure what it is