So, I've got a 1960A Marshall cabinet that I'm going to take the original speakers out and replace them as follows:
Top: (2) Celestion G12 M Greenbacks, 25W, 16 ohms each
Bottom: (2) Vintage 30, 60W, 16 ohms each
This is the same combo Friedman does in his cabs (not sure if the same ohms...