Cheaper than dirt 318 build
Don't worry about picking a cam now there's a sticky thread on it, not to mention 1,438ish other threads on the subject lmao
I agree though if that 318 you found actually needs to be rebuilt you should just hang on to it and go find a running 5.2/5.9 Magnum to swap in. You'll be thousands of dollars ahead. I've been down that road myself lol which is why the last engine I put in my Duster is a junkyard 5.9L Magnum short block with nothing new except rod bearings. Then I spent thousands on ported aluminum heads, cam, intake and headers instead :D