The change over to the "new" timing belt for the 200 TQ occurred very early in the 89 model year. The MFG date for the 89 model year 200 appears to start around 6/88. If I remember correctly the new timing belt came in around VIN KN 004000, whereas the dual knock sensor MC motor came in between the 10/88 and 11/88 manufacturing dates at VIN number 44 KN038263. Scott M.