No. I think they should be deployed on sv 163 in the mornings.
SBS948S is always full and packed like sardines in the morning,
during the rush hour. All three (SBS997Y, SBS998A, SBS999U) shud be
deployed on the 163 route in the morning to replace the morning
buses. (SBS948S, SBS687U, SBS2796A) It can serve in the morning for
163 and maybe for the rest of the day in sv 238, as 238 is always
full. Also, 163 and 238 are from the same interchange, so switching
services is easier for them.