...sorry for the delay, i don't remember to look in here often. yes, i'm still happy with the 4.56 gears...but i don't recommend them unless you have a pretty tall tire for the street, unless of course you don't do any highway driving. i have street tires that are 295/45/18 so it turns just a little over 2500 rpm to run 70mph...and it'll still touch about 22mpgs on the highway, about 17 in the city
i don't have any dyno numbers after installing the long tubes. with shorty headers the car didn 320/320