Magnum Help

Ok. I know I ask a lot of questions. I always search first but in a lot of cases there are different answers. I really am liking the sound of going with a 360magnum. On quite a few posts I've read people are changing heads because they are cracked or because they think they may crack. Some say run them cracked just don't pull stumps out. If I go with the magnum do I need to swap heads before I do anything else? I already will be switching intakes so I can go carburetor. I just don't want problems down the road. This is just gonna be my weekend car with a few trips a year down the track. But I don't want to work on it every other weekend because I work every other weekend. I want to put this engine in and not worry about getting towed home