stall or not to all?

Remember that stall selection varies WIDELY based on your motor. A "2500" stall behind your sorta stock 318 is nothing like the exact same converter behind a sorta stock 440. The input torque changes how the converter performs, and can do so drastically.

A friend has a very similar build in his dart, and I think he's got a 3800 stall in it. Drives GREAT around town, and his stall his right where it needs to be for full throttle fun. Remember that the Converter still converts below stall rpm, and there's a lot more there than "on n off".

That said, does that mean you want a 3800 stall? NO! Manufacture A is going rate differently than manufacturer B.

Call the converter manufacturers, explain what you got and what you want to do. They won't lead you astray, they want you to be happy with what you buy. And like the rest said, don't cheap out.