For the GMC Sierra 5.3, you should get the Armageddon Turbo Systems Twin Turbo Kit—it stands head and shoulder above the other kits available for that model.
The folks over at GoTurbo have taken turbo kit creation to the next level with this masterwork of aftermarket engineering. For one, the quality of the parts they use is absolutely unparalleled—you’ll be dealing with OEM-level parts from start to finish.
Beyond that, the design and performance of the Armageddon system are phenomenal—this turbo setup should grant you another 500-1500 HP when all is said and done!
It won’t come cheap though, the Armageddon costs a hefty $6,995—which is more than triple the cost of other GMC Sierra 5.3 turbo kits. But the superior quality is well worth the price.
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