With this advert ...... Noting the fellow says it's a brand new engine, well not quite, it's a reconditioned engine from Volvo, not a brand new one. They are rebuilt to a high standard though.
A tell tale sign is the welsh plugs are painted, whereas a new engine has shiny plated plugs.
Other sign is the plate advising of resized dimensions.
Seems like a reasonably nice car all the same.