Recomended flex plate and torque converter for my 5.9 magnum engine

All the converter companys will have a sspc sheet. Its in depth. Tire size, rear gear, vehicle weight, camshaft, use of vehicle, ect. Or you can buy an off the shelf converter. Which are cheap and generic. Which is tje results youll get. I just got a custom ptc converter. Best thing ive done to the car.