Stop in for a cup of coffee

Yar nam dol said
It's a little tricky but Delta and a few others make a cover plate if you have to go thru the front. Search your local supply company

I hope the plug works. It's a odd thread. 13/16-20. Come to find out Fuller truck transmissions uses one with that thread for a drain plug. If the plug works for me all should be good. That old bathroom needs a remodel just not now.