Just as a matter of correction( donīt want to sound pedantic
) but the so-called Porsche turret was in fact manufactured by Krupp.Porsche participated in designing but it was made by Krupp thus it should be referred to as the Krupp turret. The KT with the weight of the pānther would have been perfect .In fact the Panther II with the schmallturm and the KwK43 would have made a perfect KT.
BTW TIger lovers there was a plan to build a Klein(small) Tiger with sloped armour weighing 33 tons and equipped with either the kwK43 or a 105 mm.It was designed by Krupp and presented to the Waffenamt( weapons procurement office of the German army) in December 1944.However at that stage of the war the project was not feasible and only remained only on paper.There are blueprints somewhere of that Tiger Cub.I ll try to find them.