Looking for a K2 focusing screen which came standard on Nikons like FE2, FM2, FA. My Nikon FA needs one... I much prefer this type over what's installed.
I can trade the E2 screen I have in it if you'd like.
I'd just get the K3 screen from an FM3a. Unlike the switch from the K screen to the K2 screen, there's no exposure compensation needed, but it's brighter. My next FM2n will be receiving one. They're about $30-$40 on the 'bay, typically NOS.