According to the rumor our Lancaster MkIII has then engines of a Lancaster MkI.
The Lancaster MkI was powered by 4 1,280hp Merlin XXs, or 4 1,460hp Merlin 22s, or 4 1,640hp Merlin 24s.
The Lancaster MkIII was powered by 4 1,480hp or 4 1,640hp Packard Merlin 28s, 38s, or 224s.
To get confirmation Pyro or HiTech would have to inform us what engines the Lancaster in AH has.