The bulk of the work equipment fleet consists of R33s in both Main Line and World's Fair (single unit) variants. The former (around 40 cars) can found as rider (crew) cars in the RD400 series, with the single units (around 30 or so) assigned to various yards as work motors or trash duty. Since there are still some single unit R62As, it might make sense to simply add an option for about 70-80 cars to the R188 series, which would allow the single unit R62As to be removed for work duty, replacing the 50+ (dating to 1963) year old R33s.
As for the pump train, the R110As are being converted. These were 5-car sets built to IRT loading gauge.
Since my friend continues to chain smoke nonstop, she is probably an Alco.