440 Block/Cylinder Head/Intake Manifold Recommendations

After 15 plus years of sitting idle in a garage, I’m starting to restore a matching numbers 440 B-Body. The car will most likely be taken to car shows (on rare occasions down the drag strip). I was advised to purchase another 440 engine block, rather than using the original (in the event something was to happen to the original block, the value on the vehicle will depreciate a considerable amount). I have been receiving GREAT advice from the forum, so I figured I would ask the following:
- Does anyone have recommendations on a company/brand to purchase a 440 engine block, cylinder heads and intake manifold from?
- If there is nothing wrong with the original crankshaft, would you reuse?

Please note that I'm open to purchasing from multiple companies.

Thank you in advance for your assistance!

Find another complete core 440 and build it , are you looking for date specific parts ?

I was planning to use most of the hardware from the original engine. However, I open to advice from the forum.

The original engine will survive an occasional run down the drag strip. The replace the engine advice is for guys that are planning on building a very modified high HP engine and running the crap out of it. i.e. high odds of blowing it up. It does not sound like you fall into this class.

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I was planning to use most of the hardware from the original engine. However, I open to advice from the forum.

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Find a complete core and just leave the original in the corner intact if possible.

Otherwise I agree , if you aren't going to build a high HP replacement spend the money on having it built properly , replace the rods with better aftermarket replacements and use a lighter piston , that will take the stress off the parts that will ruin your weekend.