For sure a nice project, thanks for the info Michel. Also thanks for the link to the Klimov engine run, Andy. Didn´t know any existed in airworthy condition. BTW for the Yak fans searching for a different Mark, there are several Yak´s up for sale in Germany. One of each a Yak 9, Yak 11, and a Yak 18. (see link below) The Yak 3 for sale was just sold recently to England. I took pics of the Yak 9, now for sale, some years ago. A very nice bird, owned by Hangar 10, both pics of D-FAFA by me.
http://meiermotors-aircraftsales.com

Cheers
Michael