1st 318 rebuild

sireland67 said

If you have the original block, I would use what parts came stock in that block.
Crank, rods etc. if you have to buy pistons KB are pretty good and reasonable, just make sure you allow for extra top ring gap. They take like .030 ring gap, that is where most people screw up.

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Yes read something about using the specs that come with kb pistons and not use mopar specs for ring gap.
The car had a 265 in it when i bought it so dont have original block so will be a mash up of parts bought recently.
I do have the block that the forged crank and rods came from but this is already bored 030 over and guessing would need rebore again,was in bits when bought it.do you think i would be better to use that than the stock block i have.I havn't measured this one up so unsure of wear. be my mission tonight.

measured this block up and all looking good on 1st bank then flip over start on other bank and 1 of the cylinders had some pretty major rust scale on it (well beyond surface). Couldnt see before as was layered in grease.so back to using stock block and do bit of research into what frosty has said below.