This is a car that is driven in a national class of the former Yugoslavia (now Serbia)
here was made under license from Fiat and called the flag (zastava)
here's a few pictures:
and wide body version:
but still can not find technical information on the engine
Judging by the pictures ...
dual carburetor 4-horn intakes (Weber Vergaser 45 DCOE)
somewhere around 160-180 hp maybe more