A Yak-9UT would probably end up a perk plane, because it's just too much to handle.  That thing with a high velocity 37mm cannon in the nose would be a VVS wet dream.
The Yak-9T, OTOH, might not be, because its performance is average.  Still, the NS-37 is a 
real beast of a cannon, making the M-3 of the P-39 look anemic.
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leonid, Kompol
5 GIAP VVS-KA, Knights"Our cause is just.  The enemy will be crushed.  Victory will be ours."