383 power upgrade help

Okay so most the info I've received is that I should only go aluminum if I need that preformance otherwise stick with the 516's and port em does anyone know roughly the cost that would be or the cost to port 440 stealth heads? I think the power goal that I'm looking to get is achievable by just doing intake headers and a cam but if I can do something to the heads aswell that would be nice and can I have get some of yalls opinions on cams for this build based on what you know about what I'll be putting it on what fo you think is s reasonable cam choice
I had 516s on a 400 years ago with the Mopar performance 474 purple cam in a charger.
I would actually just run those heads with a cam around that size, something in the 230s duration at .050 and enjoy the car.
Pick up parts for the next build.
Also the 440 source heads will flow enough for what you'll want out of the box.
The only things you should do is gaskets/ port match. I would use the Hughes stainless steel valley pan on any head and scribe that port size on your 516s, port to that size and blend it in