Thomas M. recently upgraded his 1978 Chevy K10 longbox Stepside with Nathan Airchime P3 Horns, paired with a Graham White 353 manual air valve. He mounted the horns in a clean and accessible location under the hood, giving the truck that classic, attention-grabbing train horn sound while keeping everything easy to maintain.
The installation showcases how the Nathan Airchime P3 Horns bring that iconic, powerful tone to a vintage Chevy setup, while the Graham White 353 valve adds precise manual control for ultimate horn performance. Thomas M.’s build is a perfect example of blending classic truck style with modern audio punch.
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