At Kirban Performance, we’ve spent decades helping enthusiasts and collectors of Buick turbocharged G-body cars get the most out of their vehicles. One of the most common topics we’re asked about is the difference between the Turbo T, T-Type, and the legendary Grand National. While these models all share the same Buick Turbo powertrain, they’re not identical, and for collectors and restorers, those differences matter.

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