my son and I both had kudu in my shipment. I tried to swap horns back and forth on the skulls. Mine wouldn't fit on his, nor would his fit on mine.
I think if yours actually fit and go all the way down and don't turn an odd way, then the horns and skulls are a match. May not be yours, but likely belong to
each other. At least that's what I've heard. Maybe some other guys with more knowledge than me can answer that part for sure.