Thanks. ďnot servicedĒ doesnít make a lot sense to me either. After making some more inquires at several on-line Ford parts suppliers, I have been told that the plate number for the 2002 model is still the one to use. ( 1L5Z-7Z490-BA ). You donít see much discussion about the later model Rangers, 2004~2009. Has anyone with one of these experienced the 2~3 shift or slow engagement problems? Itís not too bad on my truck, just annoying and very consistent. It doesnít matter if itís hot or cold, or if you go from P->D five times in a row. The delay is always there at ~3sec. By the way, reverse engagement is quick with no delay. Iíve read both pro and con of external filters for these transmissions, is it worth adding one on during the upgrade? My goal is to make it last as long as possible. I had a 94 model w/A4LD that finally gave up after 180k.