都城嘉慕威曼都城巴士
In the late 1980s, the Albions servicing on the route were aging and needed replacements. However, no other suitable single-deckers in the KMB fleet were available at that time. KMB turned to its double deckers, but again none was suitable for the steep inclination of the route. so KMB fitted a Cummins LT10 280 hp engine and a manual decelerator into a 9.7m MCW Metrobus. The solution worked out, and KMB bought eight more 9.7m MCW Metrobuses (M81-M88) with special air-drawing fans to serve Route 51 with special limitation of 3 standing passengers for the safety issues.