I haven't checked the stock on-line, but you might check with
http://www.e-taps.com/

I've had good service with them. They can even manufacture a single,
custom tap if you need it. It will be made in Romania and shipped to
you.

Jim

Anyone know of a source? 7/8-18 RH is readily available, but I'll be darned
if I can find a listing on the LH version.

Thanks,

Bill