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Looking to LS or LT swap your GTO? PSI can get you set up with everything you need to get your GTO 'Wired up and fired up!". From our Harnesses Made in the USA with high quality wire and different loom options to suit your needs, Our PCM tuning service where we can get you set up with a base tune for your engine and transmission, Engine & Transmission Mounts, Dakota Digital gauges, American Autowire Chassis Harnesses, Vintage Air Kits, Accessory Brackets, Oil Pans, ETC. 

  • 1964 - 67 Pontiac GTO RTX Instruments

  • 1964 - 67 Pontiac GTO HDX Instruments

  • 1970-72 Pontiac GTO, Lemans, Tempest VHX Instruments



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