I have a ‘95 Stang with 373 gears. Have installed the white gear for the Speedo but it gets chewed up pretty quickly. On an auto it shows up by shifting gears on it’s own randomly and then just gets worst. Would like to go back to stock Speedo gear and do a recal for the Speedo. Looked up SPEED-CAL it says for stick but I have an AODE. also looked at a unit from APT but in it's instructions it gave a whole host of problems with shift points, torque converter lockups and cruise control. It seems easy to set up, had to do the same for my bike every time I change tires or gear ratios. Any one have any experience with this unit from APT? Electronic Speed Adapter Thanks.