My husband and I bought a 2006 model (4.7 V8 2wd) back in September. We recently had to replace the transmission but the port for the dipstick tube on the new one is too small for the tube and seal. When the new transmission arrived it had a plastic plug in the port for the tube. We put the plug in the port on the old transmission and it fell in. Does anyone know if there are any differences between the dipstick tubes for the different models of vehicles the 5-45RFE transmission came in?