The 1974 blocks are the same LA block, just had the lower compression pistons installed.
Here is a good factory bore 1974 318 block that I own, have a set of 1968 9.2:1 factory flat top pistons that I have slated to go in there. Also lately scored a set of 302 closed chamber heads, and have on hand the Melling 340 grind camshaft.
So yeah, this will be a simple sweet 318 when completed.
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