I think it might be very tricky to convert the Iron Duke into the Agincourt! As I recall, Agincourt had seven 12" turrets (as against five for Iron Duke), as well as a pretty unique superstructure and a skinnier hull too! You might be able to convert Iron Duke into some of the other five-turret class ships though..... If you are looking for a good basic hull, deck, turrets, etc to kitbash a Queen Elizabeth-class ship, you might get a hold of a 1/500 scale Royal Sovereign battleship (Eastern Express has been producing these, and there is one available on Ebay right now).