Which heads are best

Yeah, Im aware that statement is somewhat of an oversimplification of what has to be done. I really just wanted to buy some heads and get a motor in this car so it wont be sitting out its 24th summer of cruising. I have a bone stock 340 bottom end and I think I will just freshen it up and stick some iron heads on it and a stock 340 cam and go cruising. Maybe some day I will use the 408 in a drag car but I doubt it. I have a Viper if I want to go fast so I really wasnt trying to build the Dart into a beast. Ive been doing this junk for 40 years and I'm really to the point where the older cars dont have as much appeal as they used to. I think I would rather just get a new ACR Viper or a Hellcat and sell all this old stuff and clear out my garage. Theres a lot to be said for turnkey rides that will easily go 150 mph with the air conditioner on.