Being a fan of the Pennsy,how about a streamlined K4,then an N2,and finally the very rare K5.
A streamlined K4 is long overdue.
I don't think that an N2 has ever been built.
A K5? Why not.
Maybe 3rd Rail will do the streamlined K4 and N2. I hope someone does because that will finish my PRR steam roster.
Norm Rish