For Non-AirCon Buses... try Hougang ctr. Int..
Svcs like 325, 151, 112 still have a few Mk2NAC running
around..
Svc. 74 have Volvo Olympian 2 axles..
another thing to take note.. 101 used to have Scania NAC.. But NOT
NOW.. since the depot transferred, 101 kinda become a FAC Service.
the NAC Mk2s on 101 are very hard to pong... so.. try your luck
elsewhere...