It was slightly enlarged but retained its predecessor 's mixed construction and general layout .
The Yak - 8 was an improved version of the Yakovlev Yak - 6 .
Yak - 8 was slightly enlarged but retained Yak - 8 's predecessor 's mixed construction and general layout .
The Yak - 8 was an improved version of the Yakovlev Yak - 6 .