RE: HL KV-2 turret
IIRC Steve Zaloga mentions it in his KV book available from Osprey. I don't remember seeing a pic of it, but the artwork in the full-color center has a 75mm gun on the KV.
Oop, nvm. The artwork has two KV's with German cupolas (something the KV was SORELYlacking), but both are on KV-1 turrets. One of them has the Russian gun, the other has a German 75mm (and looks REALLYhot!).
Andrew