OK correct. Give or take 4 years, there were 4 EPBS in use up to 1995, many of the CEPS were from 1956 and all of them were MKI designs. That's a big difference compared to the 150s (14_15 yrs old), 153s 155s (11-12 yrs old), 153s (10-12yrs old) and the 150s (just 7-10 yrs old). So not even in the same era of train design. The reason that so much of the EMUS were replaced around the turn of the century was for safety issues such as slam doors and asbestos content. Most of those issues outside the south-east were dealt with by the '80s.