This gorgeous Shelby GT500 came in for install of:
– UPR 2.60″ Pulley
– Longtube Headers
– X-pipe
– Custom Tune by Randy Haywood
Final numbers came out to be 551.37whp and 535.21lbft.
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About National Speed
From dyno tuning & performance installations to staged performance packages & our unrivaled warranty, we offer it all. Learn more about what we do and how it’s done.
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