Accelerator Position Sensor - Difference between 1995 & 1996?

Also known as Throttle Position sensor. When looking up part numbers for pedal assemblies, there is a different part listed for 1994-1995 trucks (F5TZ9F836A) than for 1996-1997 trucks (F6TZ9F836AA). The 1996-1997 part is MUCH cheaper, and also has the sensor available by itself from Dorman. Does anyone know what the difference is between these sensors or pedal assemblies? Can I put a pedal assembly from a 1996-1997 on my 1995?

Thanks,
Michael Pliska