Isn't that the rebodied Fiat 124 Spider?
No, not at all. It does use the same engine as said Fiat and is
arguably "not a real Lancia," but the engine is turned sideways and
driving the wrong wheels, i.e. they are completely different cars.
(I've never seen them side-by-side, but it would seem to me that the
Lancia is somewhat larger, also.) There was also a coupe and an
interesting hatchback in the Beta range, and maybe a sedan too, but
if the sedan I'm thinking of is a Beta, it looks totally different.
As indicated above, they use the Lampredi twincam of Fiat Spider fame
(a USA '82 would be 2.0 w/ Bosch L-Jetronic injection).