165mph. i think the gearing is around 3.70 for the tt rear and 4.09 for the n/a (not exact but close i think). with the tt rear top speed is 190+. hell its only four bolts and a few other things to drop the rear subframe, so i may just try it out for a while and if i dont like it, ill swap it back. i doubt ill be doing 165 anyway.