Which 318 should I build ?

back around the time I 1st got my driver license (1983ish) my Dad had a 76 Charger SE (a Cordoba with a different grill and taillights) though there was nothing wrong with the original 360 (I wound up selling it to a guy who power washed it and dropped it into another car nd drove it for a good long while after that) Dad decided he "needed to swap the engine". The replacement 318 engine he got for it came from a 77 Lebaron from a local junkyard, had only 40K miles on it... he had called every junkyard in about a 75 mile radius for the "best" deal. He decided on this one because it was the lowest mile engine available at the time, and others wanted more money for engines with more miles.
anyways after this Charger got wrecked, I pulled that engine back out (probably had 90k on the engine at that point) and took it to the community college auto shop and it served as my 1st engine rebuild, guinea pig, shop class rebuilt engine. I was surprised at the time to see the IH symbol on this particular engine and wondered at the time what Dad really had bought. every 318 I have seen the innards of since, looked just exactly like that one.....except for the lack of that cast in IH symbol, that is.