My participation in 2006 was involving SBST buses
leh...
Summore they are "borrowed" from their usual
service....
Mine was a service 23 Mk III... 
think it's tis year or last yr started using SMRTB
SBS dun really have fleet prob on Sat as usually Sat uses less
buses somemore if 10 svs uses a total of 20 buses, it's lots
liao