42RH / A-500 in a Duster with pictures.

So I've been looking at 26 spline Torque Converters for these trasnmissions.
Since it has the lockup. (May or may not convert to non-LU).
The stall rating selections for the 26 spline is extremely limited, all I can find is up to 2500. Is there any place I can get a stall rating higher than 2500 for the 26 spline lock-ups?