How did you pick your torque converter?

It’s not a matter of picking one, but matching torque converter to engine output, cam profile, rear gear, tire size, weight, and intended use of car. You need to know what your cruise speed/rpm is, torque curve, and idle characteristics which all can be calculated.

If converter is miss-matched the car will be a pig to drive, and feed. Too lose and heat will destroy transmission, and fuel economy will suck. Too tight (low stall) car will be a dog off the line out of optimal torque curve.

Call up a converter company; give them your cars particulars listed in first sentence of post, and they can advise best compromise.