I had a quick look at some wings.
On the car with europa bumpers the underside of the bumper bracket to the bottom edge of the wing was about 100mm on the early blade bumper it is about 70mm.
Looking back at the repro wings , they came pre drilled with bolt holes for 1200 style lights and tombstone lights, either light would cover the others unused holes.
As for early wings fitting a late car, they fit fine, I have a '71 1200 that had early rear wings from the factory. Back in the late eighties and early nineties, in the uk at least, a lot of late models were fitted with early wings.
So the only difficulty I can see is that the slot for the bumper bracket will be too low, if you open it up for the late bracket.