Hopefully if others, like me, find this forum while trying to find a solution to a very real problem a lot of folks have (who own older homes and want to update their bathroom without replacing their tub) they will read past your pretentious bravado and know-it-all attitude to discover the link below that works perfectly. So yes, I do want you to say "if I EVER find someone who makes such an item, I will refer them to you." Instead of being a jackass and acting like it must not exist if YOU don't know about it or need it. The internet is a "wonderful" until people spew their ignorance all over the place instead of offering any real advice.
https://www.plumbtile.com/plumbing-tile-product/TBD-TBD3001BBK.html
My house was built in the 50's and I am remodeling the bathroom and wanted to leave the vintage tub in place. Unfortunately, I had to destroy the old 2 inch drain to remove it before having the tub resurfaced. I got worried when I learned all the standards have changed in the decades since and couldn't find a drain to fit... Thankfully someone else on this forum found a solution and I'm happy to report my new standard drain fits perfectly with this Kohler brass bushing adapter! Good luck to any others out there in the same situation.
