Was it a Yak with a radial engine?

Yak-3UPW 9/04623/F-AZIM, privately owned, Duxford 2003. Copyright Gary Parsons, f4 Aviation 2003

Yak-11 D-FYAK, privately owned, Berlin 2004. Copyright Gary Parsons, f4 Aviation 2004
We had an AH meetup there back in... 2001 I think. A few of us were asking the same question and I think
airmess went to the ATC Tower and asked them if it was really a Yak and not a LA-5. The tower agreed with us, but the pilot got back to us, via the tower, and said it was definitely a Yak, but fitted with a radial.