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When you're first looking to beef up your 2020 GT500, Custom Tunes from The Tune Shop at Lethal Performance are a great way to start. We work with killer shops to get you what you need to be a beast on the strip. While it has incredible specs right off the line, 2020 Shelby GT500 Custom Tunes will begin pushing your ride to its limits. You can go with a Palm Beach Dyno Custom Tune, either with forced induction remote tuning or naturally aspirated with nitrous. Or, try a Lund Racing Custom Tune for HP Tuners nGauge — we've been working with Lund Racing for a long time, and they always kill it. Browse our 2020 GT500 Custom Tunes now!