Roller LA cam into Magnum?

So you put a 5.2 cam in? If it feels doggy you probably need to look further than just going with a cam
Put new fuel pump in. that helped. Only thing not checked is the tune. As I don't have a way to do that. 25 year old ignition. No dodge dealer has the tools anymore. I did get the injectors phased and that was good. Get 17mpg, runs nice.