Compatible drain for freestanding Victoria & Albert Roxburgh tub

[db8]

Just found out my already delayed drain (k-50) for my V&A tub is backordered for another 6 weeks and my entire remodel is now waiting on it; so, I'm looking for an alternative. Rohl (the USA distributor) said a replacement drain needs to accommodate a 1" thick wall and an overflow that's 2" in diameter. I honestly don't even know where to start since most manufacturers don't list those stats and the plumbing stores and manufacturers I've called don't know what's compatible. Any help would be greatly appreciated.

 

[Marlinman]

Look at Jaclo. They have many high quality tub drains.

https://www.jaclo.com/catalogue/products/tub-drains-faceplates-strainers/all-brass-tub-drains