Go for the bore size. Bigger is better but not for the cubic inches. It’s more so for head breathing. Bigger birds allow the cylinder head to breath better.
Keep it.
I’d do aftermarket rods. Lighter, stronger, less windage.
I myself would look at the domed KB slugs. Ask for a single modification to the thinnest rings available. Total seal rings.
Edelbrock heads at a minimum, add in the 1.7 rockers IF that’s is what is needed.
LSA is garbage. Torque loooooooooo-ser
Gave them in the previous post