4.30 gears, speedometer recal

I can vouch for the chrysler gear part. My green GT in its old AODE had a white gear for the 3.73's out back, and the speedometer just wasn't very accurate. I eventually had problems with the tranny, it would downshift on me periodically for no reason, then shift back up. I replaced the tranny with the motor, then found the problem: the white gear on the VSS had stripped, so it wasn't spinning properly anymore. Oops.

My new tranny has a different drive gear on the tranny output shaft, so I was able to get a Ford gear that was a perfect match for the 3.73's. No problems so far.