Probably not.
Among other reasons it won't work is it says it has "the newest software to work with the new $100 bills", which means it has the -024 comm id protocol (unless I'm mistaken). The S+ you want to install it into uses id -022/023. The id protocol is the communication method the bill validator uses to "talk" to the mpu board, they have to match.
Plus your S+ was probably setup for the older DBV validators, so you'd have to change out other parts to install the WBA unit. I think you can put a WBA validator in an S+ but it has to have the correct software in the WBA that is compatible with the S+, along with the WBA cabinet mounting parts and cash can stuff. The WBA units were not made to be a direct slide-in replacement for the DBV units.