Stainless Steel Omega Case for Seamaster Cal. 550

Decided it was time to do something with a disassembled cal. 550 Seamaster that was in my drawer for a few years. Took it to my watchmaker for a service and he told me the case isn’t right for the movement. It took me a while to realize that I had sold the original case a couple years back, thinking that a second case (that was in better condition) I had would be compatible. The case I have is for a manual wind Seamaster 🤦

Anyway, now I’m looking for a stainless case that will work with a cal. 550 movement. Ref 165.020 will work, but I’m sure other compatible references exist.