67′ 300 440 to 500HP

So planning my big boy engine build and need some guidance from the Vets. So i have a stock 440 with original 16k miles and sitting in the garage for years. I currently have an aluminum radiator and Quick Fuel Brawler 750 on the stock intake and dual exhaust with Super 44 Flowmasters. She runs damn good. So I will drive her this year and plan my build. The goal is 500 HP or close to it following the Motortrend build, my question is what other upgrades to the car must I do o be safe and...

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Author: Cortez