5.2 magnum 392 stroker in 70 duster, some ?s and what heads?

I got a deal on this shortblock hence the odd combo. I normally build my own motors but the machined/assembled /shipped shortblock was cheaper than the rotating assembly.

So, i am installing this in a 70 340 3 speed duster and swapping to a 4 speed in the process. I bought this car in Arizona in 1993 and am trying to make time for it as I have retired from the Air Force. I want it to look original to those that don't know so I will be staying carbed and he v belt accessory drive.

I have done some research but wish for some clarification on a few details and suggestion on heads.
Heads:
Aluminum, from ? and LA or Magnum? I am looking to make some pretty strong power and while i want to appear fairly original (I will be running long tube headers and some 273 hi-po valve covers i have had for about 25 years) i am not averse to a single plane intake. Basically, I have been into mustangs, amx's and f bodies for the last 20 years and i have little clue of current head availability outside of edelbrocks.

Flywheel; SOLVED
motor is zero balanced so a neutral flywheel is needed. iirc, thats what is currently on my 340 so is it usable?

Oil Pan; SOLVED
My memory says it should be a 360 pan on the 318 magnum. Is that correct?

Headers; SOLVED
I have a set of new old school long tube headers for la heads, will the work on magnum heads of that's what i go with?

Lastly, i don't have any lifters, i am running an HR cam, i need to look up the specs. I haven't heard anything negative about oe mopar lifters and would prefer them over aftermarket. Where is the best place to purchase?

Thanks for any assistance!