Basically yes in principle, but in detail sometimes wobbly - see these discussions - http://www.imcdb.org/vehicle.php?id=246328 , http://www.imcdb.org/vehicle_318647-Ford-Cortina-1969.html . But all loopholes/exceptions were plugged for 1970.

But the point here is that sidemarkers are not diagnostic for Made-For on 69+ Shadows - a 74 UK-spec would have them.