Cheap 318 build questions

That’s basically what I did when I raided my daughters wrecked ‘00 Durango. I grabbed the 5.9, installed a RPM intake, 600 cfm carb, old electronic distributor fired by a Chrome box and added headers w/2-1/2 exhaust piping. I used a trap door air cleaner and I was done.

Simple, effective, an excellent example of pirating for re use in an older machine. An easy 300 hp engine.
(Or right close to it.)
I had to use a B&M flexplate for a neutral balance converter and a electric fuel pump.
And quite efficient. That would be a great mill for a hot rod or a truck like the OP has.