What budget torque converter?

Around 2200/2500 is what I remember getting in the Duster. A real 340 converter has been hard to find for a number of years. At the converter company I worked for in the past, 340 converters were core in first.
I’ve been told by a local Mopar guru my converter stalls around 1800 or so after he drove my car. It’s pretty gutless until 1500 or so rpm.