The LO3X might retire early, so it might be possible to de-registration both of them. Anyway, SBS9168S is likely to be preserved in the school of the East.
19 Oct 2012: SBS9023B, SBS9025X, SBS9027R–SBS9031C
17 Nov 2012: SBS9032A–SBS9033Y, SBS9035S, SBS9038J, SBS9041Z, SBS9043T–SBS9047H, SBS9049C –SBS9050Y, SBS9052S –SBS9053P
21 Dec 2012: SBS9055J, SBS9057D –SBS9061R, SBS9063K –SBS9067A, SBS9069U –SBS9080K, SBS9082E –SBS9090G
11 Jan 2013: SBS9091D–SBS9095T, SBS9097M, SBS9099H–SBS9102G, SBS9105Z, SBS9107T–SBS9109M
25 Jan 2013: SBS9111E–SBS9115U, SBS9117P, SBS9119J–SBS9129E
8 Feb 2013: SBS9131Y, SBS9133S –SBS9143M
22 Feb 2013: SBS9144K–SBS9148A, SBS9150S –SBS9157Z
9 Mar 2013: SBS9158X–SBS9162H, SBS9164C –SBS9167U
22 Mar 2013: SBS9168S–SBS9171G, SBS9173B, SBS9175X, SBS9177R –SBS9187L
23 Mar 2013: SBS9172D
26 Apr 2013: SBS9189G–SBS9190B, SBS9192X –SBS9195M, SBS9197H –SBS9199C
5.35 PM , 9198 LO3X leaves Toa Payoh interchange fyi thanks ;)