Try Travelers Tool, they show them listed in their catalog. An L-0 is around $150 bucks from them. One other option is to look for a face plate on eBay, and machine it to fit your chuck, provided it has sufficient thickness to the FP to mount a chuck. I've been pretty fortunate to find a number of chucks and face plates for all of my needs for my lathes. All my lathes have L-00, L-0, an L-1 spindle noses. No "D" nose spindles in my family of lathes!