From this old thread
Tried doing up 163's weekday timetable.... rego changes but based
on today's list.

Rego conversions for service 163's fleet due to the Scania
K230UB fleet additions:-
SBS600U
SBS8132B
SBS662R
SBS8142Y
SBS682H
SBS8079Y
SBS2630U
SBS8081P
SBS2703T
SBS8130G
But I think there's some discrepancies in the timing. SBS2796A
(23E's shift) will have 1 more trip in the evening departing
Sengkang at 1716 hrs, after SBS2663A (20S shift). The list will
then go 1 line downwards with SBS969G being the last bus to
depart Toa Payoh interchange from Sengkang at 2330 hrs.