I just can not see how the nacell and engine can produce lift
Three immediate considerations -
(a) curved surfaces with fluid flow can generate significant forces
(b) flow through the engine at high alpha or sideslip angles involves turning the airflow at the nacelle inlet - equals forces. Indeed, this sort of problem can create LSS implications in the missed approach as the lip lift force is destabilising. Also a problem with many piston to turboprop conversions at the prop disc.
(c) likewise, at high angles, the engine efflux thrust can be resolved into vertical and horizontal components.