Markings on converter

I am honestly asking this, please somebody tell me where I can find one of these factory high stalls in a junkyard? I'm saying its easy, every 318 has one. If there is something better then that please tell me where. Another question surely the 440 sixpac motors would come with one of these high stalls right?

without pulling the transmission out of alot of junkyard mopars I'm not sure how you plan to find a higher stall factory converter, by the time you spend finding a factory converter and pull a transmission to get one of unknown condition you may as well of purchased a new one or a slightly used one from a member