Torque Converter Stall Speed help.

Looking for advice on selecting the correct converter for my build. It’s actually going into a 78 Dodge D100 truck… but I come here for all the great tech information.

Combo is a 5.9 mag with good EQ heads, 9.4 compression, Hughes 218/222 hydraulic roller and 750 vac secondary carb.

Tranny is a A500 that I am currently rebuilding with a OD unit from a 518 with the newer gear set. Gearing out back is 3.91’s.

Looking for recommendations on stall speed and where to get a good converter built. I want a tight one that will stall when the gas is mashed, but will still drive good in town. I am looking to keep things lock up.

Open to ideas!

Thanks for your help.