I'd been looking a this pic of a Panther D and thought it had the fixed turret. 
 
I guess mine is a what if Panther G with a Panzer IV turret. As if the Panther was salvaged without the damaged turret...
 
...and the Panzer IV turret recovered.
 
     
 
I know the turret ring size differed on the two tanks but with a little imagination a machinist  
could fabricate a new turret ring.
 
  
 
  
Before turret was painted...
 
 
I may put Schürzen (side armor) on the tank, like the one in the first pic. just having some fun with this project.
More to come....