Hypothetical 318 Builds

This is a great thread. Thanks for starting it. I’m not as educated as some of you when the numbers start flying around these posts but it seems like I could ask you guys a couple questions.

I will eventually be (re)building a 318 for a 54 Plymouth Plaza Suburban I have. Nothing special but I want to make it bulletproof since my wife will drive it and she is not a “car” person.

I have two 318s that have been sitting in my garage for a few years. One ran in my dart and the other was given to me by a friend. I don’t know what car or truck either of them started life in and I don’t know what has been done to the internal if anything. I’m gonna use of hat I have from both and make the best 318 I can.

With that said, which block do you recommend?
Cast 4104230 dated 8/31/79
Cast 4006730 dated 9/13/76

I have two sets of cast heads.
Cast 4027163
I have an Edelbrock performer intake and Hedman headers.

I will use what I have if it’s good and replace items as needed to make one good engine.

Thoughts?

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