A while back I did a write up on switching the bell housing to run a NA trans in a TT. I didn't pay attention to the speed sensor. Is there a large difference between the speed sensors themselves. I notice a price difference between the NA speed sensor and the TT speed sensor. I'm away from the house right now and plan on trying to put the TT speed sensor in the Na trans. Has any one done this, if so what should I expect. I'm driving around with no speedometer and assume the sensor is bad. The plan is to use the TT speed sensor out of my other trans because I know its good and has the right gear on it.