Should give the SB to the Finns, they used theirs all through the war. Soviets pulled almost all from service by December of 41
Agree the SB would be a nice fit for the Finns. They used captured SB's from the winter war and got others that were captured by the Germans.
I think the Tu-2 would be a better addition for the Russians. This was the version I first thought was being proposed. It was being built in 1941 and served through 1950 and was the 2nd most important two engine bomber after the PE-2.