160 meters for Drake 2B

[lrz50]

I found this old mod on line, to add 160 meters to a drake 2B. I have one, and would to do the mod. I have rounded up everything except the crystal I need. They call for a 5.5mc fundamental crystal. Does anyone have one I could buy? I have looked on ebay, and a few others places, no luck. The crystal sockets on a 2B have a 1/2" spread.

Also looking for a standard 24.5mc crystal for a 2B.
Email me at lrz50@hotmail.com