383 cam choice

Better....as in more HP.....better mileage....or

For just all round use, the cam you have is pretty good for a heavy car, 3.23 axle. New cam entails new lifters as well, so some $$$ involved.
It seems i see posts where a certain camshaft is an old design or isnt ideal for a chrysler engine. I thought being the engine was rebuilt in the early 90s that could be the case. Just basically looking for more power without hurting driveability if possible