Need to replace SunRay Model 930 12V flourescent

Simular to net hams'so situation but in our stick house. We are in the process of changing all the bulbs to LED. I was about to change the sockets from a 3-way to a single then found some 3way LEDs. A spendy bulb but didn't have the project of replacing the 4 sockets so went the easy route. I too would like to know where the replacements for these can be found.