The Buick Grand National turbocharger is the iconic component that launched GN’s performance legend. Restorers seeking to recapture stock power or slightly exceed it need high-quality replacements that fit as intended. Aftermarket units must be engineered for the GN’s narrow engine bay and must work reliably with existing exhaust and cooling systems. Suppliers like Kirban Performance specialize in turbochargers built to OEM spec, often including rebuilt cores or balanced performance upgrades. For a turbo that looks, acts, and feels right, start your search here.

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