Stock Magnum 5.2/5.9 camshaft w/carb?

Is it worth putting in a 5.2 stock cam into a 5.9? Looking at cost of the entire vehicle build.....finished verses high hp lol
I own the 5.2 extra cam, but will it make a noticeable difference? I'm just not looking to but springs, retainers, new cam etc....
Maybe a regring mild if the 5.2 makes little difference.
Opinions please