Yeah, and I think SMRT's Dennis Lances can also be converted
into WAB. Just eliminate the step at the exit and add a ramp, and
replace with a plug door can liao.
For SBST, I think 73 deserves to have WAB.
For SMRT, maybe 961, 980, 61, and 851.
Although its possible to add a wheelchair lift at the rear exit
for the lances, i think they need some very strong seatbelts for
the wheelchairs. The accleration and brakes of the vehicle is
just... wow.